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Aurora visibility in Kiruna (Aurora appearance in the all-sky movie data (mpg) at IRF-Kiruna)

Summary: January-April 2004
Summary: August-December 2004

   Explanation of this page

List: Highlight - - - best days
List: Onset of active aurora
List: Day-to-day visibility


January-April 2004 (20040101-20040408: 99 days)

Observation rate was
month	auroral arc	auroral expansion	large expansion		cloudy
2004.1	74% (23/31)	65% (20/31)	55% (17/31)		52% (16/31)
2004.2	76% (22/29)	66% (19/29)	48% (14/29)		38% (11/29)
2004.3	52% (16/31)	32% (10/31)	26% (8/31)		48% (15/31)
2004.4 (4.01-4.08)	63% (5/8)	50% (4/8)	38% (3/8)		13% (1/8)
Total (99 days)	67% (66/99)	54% (53/99)	42% (42/99)		43% (43/99)
If tourist stayed 2 consecutive nights, chance to see aurora was
month	auroral arc	auroral expansion	large expansion		cloudy
2004.1	97% (30/31)	90% (28/31)	81% (25/31)		52% (16/31)
2004.2	97% (28/29)	86% (25/29)	76% (22/29)		38% (11/29)
2004.3	74% (23/31)	48% (15/31)	39% (12/31)		48% (15/31)
2004.4 (4.01-4.08)	100%	86% (6/7)	86% (6/7)		13% (1/8)
Total (99 days)	90% (88/98)	76% (74/98)	66% (65/98)		43% (43/99)
If tourist stayed 3 consecutive nights, chance to see aurora was
month	auroral arc	auroral expansion	large expansion		cloudy
2004.1	100%	97% (30/31)	90% (28/31)		52% (16/31)
2004.2	100%	93% (27/29)	93% (27/29)		38% (11/29)
2004.3	87% (27/31)	58% (18/31)	48% (15/31)		48% (15/31)
2004.4 (4.01-4.08)	100% (7/7)	100% (7/7)	100% (7/7)		13% (1/8)
Total (99 days)	96% (94/98)	84% (82/98)	77% (77/98)		43% (43/99)

August-December 2004 (20040824-20041231: 130 days)

Observation rate was
month	auroral arc	auroral expansion	large expansion		cloudy
2004.8 (8.24-8.31)	63% (5/8)	50% (4/8)	25% (2/8)		38% (3/8)
2004.9	37% (11/30)	30% (9/30)	17% (5/30)		50% (15/30)
2004.10	52% (16/31)	35% (11/31)	19% (6/31)		52% (16/31)
2004.11	80% (24/30)	70% (21/30)	33% (10/30)		20% (6/30)
2004.12	58% (18/31)	45% (14/31)	16% (5/31)		74% (23/31)
Total (130 days)	57% (74/130)	45% (59/130)	22% (28/130)		48% (63/130)
If tourist stayed 2 consecutive nights, chance to see aurora was
month	auroral arc	auroral expansion	large expansion		cloudy
2004.8 (8.24-8.31)	88% (7/8)	75% (6/8)	38% (3/8)		38% (3/8)
2004.9	53% (16/30)	50% (15/30)	23% (7/30)		50% (15/30)
2004.10	61% (19/31)	45% (14/31)	32% (10/31)		52% (16/31)
2004.11	90% (27/30)	83% (25/30)	53% (16/30)		20% (6/30)
2004.12	71% (22/31)	61% (19/31)	29% (9/31)		74% (23/31)
Total (130 days)	70% (91/130)	61% (79/130)	35% (45/130)		48% (63/130)
If tourist stayed 3 consecutive nights, chance to see aurora was
month	auroral arc	auroral expansion	large expansion		cloudy
2004.8 (8.24-8.31)	100% (8/8)	100% (8/8)	50% (4/8)		38% (3/8)
2004.9	67% (20/30)	63% (19/30)	30% (9/30)		50% (15/30)
2004.10	68% (21/31)	52% (16/31)	42% (13/31)		52% (16/31)
2004.11	100% (30/30)	93% (28/30)	70% (21/30)		20% (6/30)
2004.12	81% (25/31)	71% (22/31)	42% (13/31)		74% (23/31)
Total (130 days)	80% (104/130)	72% (93/130)	46% (60/130)		48% (63/130)

========================================================
Explanation (how the statistics is taken)
========================================================

(1) These monthly statistics are compiled from the day-to-day list below. The monthly statistics include the probability that we could see aurora at least once during a 2- or 3-day consecutive period.

(2) In the day-to-day list, one can find the past auroral activity over Kiruna during this season (time is given is in UT: Universal time, which is 1-2 hours behind Swedish time). The classification is made by looking at the all-sky camera data at IRF-Kiruna, which is converted to mpg movies (20 sec resolution):
http://titan.irf.se/misato/2004/

(3) The aurora is divided into two categories: very active ones (The first list: "aurora explosion") and quiet-moderate activity (The second list: "visible aurora"). The former is the one that all tourists should appreciate, whereas the latter is good for photographing.

(4) The active aurora ("aurora explosion") is further subdivided into large break-ups that cover the entire sky and minor activation/break-ups that cover a part of the sky. Listed is the time that such break-ups took place in UT (Universal time, which is 1-2 hours behind the Swedish local time). Minor ones are written in parentheses. The note "minor.north" is those activated only in the northern sky.

(5) In the second list ("visible aurora"), the time we could see some aurora is given. Note that aurora appears/disappears frequently during the time in the list.

(6) Due to manual eye-identification, the definition of "active" and "visible" is slightly more stringent in Fall 2004 than it was in Spring 2004.

(7) In the image, the directions are:

    up = north
left=east, right=west
    down=south

* Kiruna local time = UT + 1 hour ( ~ 2004.03.27)
* Kiruna local time = UT + 2 hour (2004.03.28 ~ 2004.10.30)
* Kiruna local time = UT + 1 hour (2004.10.31 ~ )

The real-time image (20 sec update) is also available at http://titan.irf.se/misato/abisko/sky_abisko/hoge2.html


========================================================
Highlight

2004-12-12: pulsation
2004-11-11: pulsation
2004-11-09: storm explosion
2004-11-07: bule-purple line
2004-04-03: with moon
2004-03-16: omega band
2004-03-13: black band
2004-03-10: multiple diffuse
2004-01-15: evening arc

========================================================
List of active aurora
    Onset of aurora explosion (science & tourist information):
========================================================
Fall 2004

2004-12-31: (minor=2203 UT, minor.north=2030, 2049 UT)
2004-12-21: (minor=2232 UT, minor.north=1850, 1913, 1938, 2010, 2356 UT)
2004-12-17: (minor 1925 UT, minor.north=1538 UT)
2004-12-16: 2034 UT (minor 2015 UT)
2004-12-15: 2213 UT (through cloud minor=2035, 2117, 2132, 2157, 2242, 2318 UT)
2004-12-14: (minor.north=0023, 0045, 0113 UT)
2004-12-12: 1551, 0001 UT (minor=1500, 1530, 2056, 2307, 2337, 0044, 0107, 0134, 0319 UT)
2004-12-11: (minor.north=1927, 2134, 2211 UT)
2004-12-10: (through cloud=2013, minor=2100 UT)
2004-12-08: (minor=2043, 2056 UT, minor.north=1740, 1753, 2037 UT)
2004-12-07: 2151 UT
2004-12-06: (minor 1702 UT, through cloud=1514, 1531 UT)
2004-12-05: (minor=2150, 2203, 2359 UT)
2004-12-01: (minor=2042 UT, minor.north=2103 UT)

2004-11-30: (minor=1843, 2137, 2205, 2225 UT)
2004-11-29: (minor.north=0204 UT)
2004-11-28: 1936, 2335 UT (minor=1923, 0218, minro.north=2011, 2046, 2211 UT)
2004-11-27: 1643 UT (minor=1614, 1847, 2019, 2127, 2334, 2355, 0023, 0049 UT)
2004-11-26: (minor=1931, 1946, 2105, 2112 UT)
2004-11-25: (minor=2050, 2205, minor.north=1826 UT)
2004-11-24: 0216 UT (minor=0101, 0227, 0246, 0307, 0334, 0352 UT)
2004-11-23: (minor=2258, 2306 UT)
2004-11-22: (minor=2124, 2234 UT, minor.north=2249, 2301, 2357 UT)
2004-11-21: (minor=1927, 1950, 2026, 2306 UT)
2004-11-20: 1838 UT, 2234 UT (minor=1826, 2245 UT)
2004-11-16: (minor.north=2045, 2154 UT)
2004-11-13: (over cloud 2101, 0211, minor 0044, 0122 UT)
2004-11-12: 1721 UT, 1746 UT, 2010 UT, 2046 UT, 2116 UT (minor=1658, 1820, 2107 UT)
2004-11-11: 0209 UT, (over cloud 2230, 2243, minor 0250 UT)
2004-11-10: 1706 UT, o=2019 UT (over cloud 1525, 1541, 1613, 1628, 1857, 1952, minor=2036, 2051 UT)
2004-11-09: 1714 UT, o=2018 UT (over cloud 0233, 0252, minor 1818, 1857, 1908, 1945, 1954, 2239, 0150, 0209 UT)
2004-11-08: 1841 UT, o=2104 UT, 2145 UT, 0039 UT (over cloud 1931, 0028, 0340, minor=2132, 2227, 2319, 0106, 0453 UT)
2004-11-07: 2220 UT, oo=0100 UT, o=0245 UT, o=0356 UT, 0444 UT (over cloud 1828, 1904, 2001, 2335, minor=2148, 0052 UT)
2004-11-03: 1750 UT, 2044 UT, o=2204 UT (over cloud 2007, 2031, 2150, 2300 UT)
2004-11-02: (minor=2154 UT)

2004-10-31: (minor=1959, 2130, 2349 UT)
2004-10-29: 1903 UT, (minor=1820, 2359, 0111 UT)
2004-10-14: (minor=1849 UT, minor.north=1832, 1916 UT)
2004-10-13: 2231 UT, (minor=1700, 1749, 1854, 2335, 0004 UT)
2004-10-12: 2239 UT, (minor=2128 UT, 0112, 0155, 0205, 0233 UT)
2004-10-11: (minor.north=2309 UT)
2004-10-10: 2148 UT, (minor=0024, 0138, 0152, 0208 UT)
2004-10-04: 1858 UT, (through cloud=1851, 2021 UT )
2004-10-03: 1800 UT, o=2056 UT, (minor 1835, 2343 UT)
2004-10-02: (minor=2250 UT)
2004-10-01: (minor.north=1951, 2055 UT)

2004-09-30: (minor.north=1929 UT)
2004-09-19: (minor=0036 UT over cloud)
2004-09-16: o=1913 UT, 2223 UT, (minor=2123, 0117, 0135 UT)
2004-09-15: 2240 UT, (minor=1935, 2000, 2122 UT),
2004-09-14: 2242 UT, (minor=2032, 2200, 0106, 0126 UT)
2004-09-13: 2240 UT, (minor=2256, 0014, 0102 UT)
2004-09-11: (minor=2102 UT)
2004-09-07: 1932 UT, (minor=1952 UT)
2004-09-05: (minor=2132, 2254 UT)

2004-08-31: 2250 UT
2004-08-30: 2107 UT
2004-08-27: (minor=2150 UT)
2004-08-26: (minor=2247 UT)

--------------------------------------------------------
Spring 2004

2004-04-18: (2037 UT minor)
2004-04-15: 2053+2123 UT
!!! IRF server was down for 2004-04-09~13 (during Easter)
2004-04-07: (1934, 1943+2006 UT minor), 2037 UT, 2255+2311 UT,
2004-04-06: (1937, 2202+2244 UT minor)
2004-04-05: 2149 UT, 2301 UT, (2339 UT minor, 0033 UT omega, 0137 UT minor)
2004-04-03: 1946 UT, 2003 UT, 2041 UT, (2115, 2145 UT minor), 2205 UT, (2352 UT minor)

2004-03-27: (1942 UT minor), 2144 UT, (2239 UT minor)
2004-03-26: 2021 UT
2004-03-16: 2007 UT, (2049, 2237 UT minor), (2347 UT intensified omega)
2004-03-13: (1819, 1858, 2024, 2050, 2138, 2302+2316 UT minor), 0011 UT, (0129 UT minor)
2004-03-11: (1730 UT in twilight), 1755 UT from west followed by pulsation, 1931+1953 UT, (0004+)0010 UT
2004-03-10: 1910+1914 UT, (2123, 2241 UT minor), 2329 UT, (0244 UT with pulsation)
2004-03-09: (red through cloud 2015 UT), (2024 UT through cloud), (2106 UT), 2215 UT, (0112+0152 UT through cloud), (red 0330 UT)
2004-03-07: (2027, 2053 UT minor)
2004-03-02: (2040, 2122 UT minor)
2004-03-01: 1845+1856 UT, (0203 UT minor through cloud)

2004-02-28: (1944 UT), 2025 UT, 2119 UT, 2354 UT
2004-02-27: 1923 UT, 2130 UT
2004-02-25: (2223 UT minor)
2004-02-24: (2254 UT over cloud)
2004-02-23: (2028, 2117, 0047 UT minor)
2004-02-22: (1936, 2009 UT minor), 2048 UT
2004-02-21: (0002 UT minor), 0032 UT omega band, (0058 UT minor), 0128 UT, (0213 UT minor)
2004-02-20: (1701+1721, 0015, 0141 UT minor)
2004-02-19: (1927 UT minor), 2150+2207 UT, (0227 UT minor)
2004-02-18: (1950, 2140 UT minor through thick cloud)
2004-02-14: (1716 UT minor), 1856+1916+1923 UT, 2049+2058 UT,
2004-02-13: (1819 UT through cloud, 2047 UT minor through cloud), 2116+2133 UT through cloud, (2200 UT minor through cloud), (2245+2317 UT through cloud), (pulsation after 0110 UT),
2004-02-12: (1607+1626+1704 UT minor), 1831 UT
2004-02-11: (1630 UT minor through cloud, 1738 UT through cloud),
2004-02-10: (2153 UT minor)
2004-02-09: (1913+1938, 2048 UT minor), 2141 UT, 2253 UT
2004-02-08: (2114 UT minor), 2147 UT
2004-02-06: 1827 UT
2004-02-03: (1651, 1855, 2040 UT minor), 2118 UT, (2210 UT minor),
2004-02-01: 2053 UT

2004-01-30: 2045 UT, (2154 UT minor)
2004-01-28: 1914 UT, ??=dome problem
2004-01-27: 2110 UT, (2151 UT minor through cloud), 2316 UT
2004-01-26: (0041 UT minor through cloud), 0112 UT, 0147 UT, (0246 UT minor)
2004-01-25: (1711 UT minor through cloud)
2004-01-24: (0038 UT through cloud), (0203 UT minor), 0338 UT
2004-01-23: 1828 UT, 1938 UT, 2000 UT, (2023 UT minor), 0040 UT,
2004-01-22: 1844 UT, (1922, 0437 UT minor)
2004-01-21: (1831, 1904, 2121 UT minor), 2243 UT, (2330 UT, minor), 0049 UT
2004-01-20: (1602, 1630, 1941 UT minor), 2027 UT, 2138 UT, (0023 UT omega-band), (0125 UT, minor)
2004-01-17: 2107 UT
2004-01-16: (1708 UT, 1900 UT, 2019+2031 UT all through cloud)
2004-01-15: (1509, 1539 UT minor), 1706 UT, (2112 UT minor), 2319 UT, 0010 UT, 0040 UT,
2004-01-14: (2325 UT minor), many minor enhancements
2004-01-10: 1741 UT, (1835 UT minor), 1915 UT,
2004-01-09: 1834 UT, 1926 UT, (2318 UT, 0005 UT minor)
2004-01-07: (2010 UT minor)
2004-01-05: 1622 UT, 1755 UT, 1850 UT, 2152 UT, (0036 UT minor)
2004-01-04: 1900 UT, 2124 UT
2004-01-02: 1951 UT, 2019 UT, (0132 UT minor)
2004-01-01: 2025 UT, (0040, 0205 UT pulsation)


========================================================
Day-to-day list
    Visible aurora activity (science & tourist information, D=strong diffuse):
========================================================
Fall 2004

2004-12-31~01: 1850-2330 UT
2004-12-30~31: cloudy until 00 UT (northern lim 2000-2140)
2004-12-29~30: cloudy
2004-12-28~29: cloudy
2004-12-27~28: cloudy
2004-12-26~27: no aurora (partly cloudy)
2004-12-25~26: cloudy until 02 UT
2004-12-24~25: cloudy
2004-12-23~24: cloudy after 18 UT
2004-12-22~23: cloudy
2004-12-21~22: cloudy (through cloud=1800-2030 & 2230-0000 UT)
2004-12-20~21: 1920-2110 & 0115-0125 UT / cloudy after 02 UT
2004-12-19~20: cloudy
2004-12-18~19: cloudy
2004-12-17~18: cloudy (through cloud=1515-1615 & 1855-2010 UT)
2004-12-16~17: cloudy (through cloud=1950-2120 & 2210-2310 UT)
2004-12-15~16: cloudy until 02 UT (through cloud=1955-2340) / D=02-05 UT
2004-12-14~15: cloudy until 2345 UT / 2345-0120 / D=0120-0150
2004-12-13~14: cloudy until 2315 UT / no aurora
2004-12-12~13: 1425-0200 UT (D=1640-2040 & 2220-2305) / D.pulse=02-06**
2004-12-11~12: cloudy (northern lim=1810-2240 UT) / D=0220-06** UT
2004-12-10~11: cloudy (through cloud 1940-2200 UT) / D=22-02
2004-12-09~10: cloudy (through cloud 1630-1845 UT, 2003+1min, 2047+5min)
2004-12-08~09: 1450-1815 & 2030-2240 UT / D.pulse=2350-0150 UT / cloudy after 0330 UT
2004-12-07~08: 1735-19 UT / cloudy / 21-23 / D=23-01 & 0230-03 / cloudy
2004-12-06~07: cloudy (1430-1810 UT thrugh cloud)
2004-12-05~06: 1930-0020 UT / D=0020-01 UT
2004-12-04~05: 20-21 UT / cloudy
2004-12-03~04: cloudy
2004-12-02~03: cloudy after 1800 UT (faint 2 min through cloud 0020)
2004-12-01~02: clouly -2030 UT / 2040-2125 / 0030-0210

2004-11-30~01: cloudy -2000 UT (1843-1850 through cloud) / 2055-2300 UT / light cloud
2004-11-29~30: 1530-1730 / cloudy / 1830-1900 / cloudy / D=0040-0400 UT / cloudy
2004-11-28~29: 1430-1600 / (D?=1600-1745) / 1745-0015 / 0200-0230 UT
2004-11-27~28: 1530-2200 / D=22-01 UT
2004-11-26~27: 18-2130 UT
2004-11-25~26: 1645-2330 UT / D=2215-03 UT
2004-11-24~25: cloudy / D=23-05 UT (omega=0100-0430)
2004-11-23~24: 2245-2330 UT / cloudy 00-02 UT / no aurora
2004-11-22~23: 19-00 UT / D=00-02 UT
2004-11-21~22: 15-16 UT / cloudy / 1745-2325 / D=2325-04 UT
2004-11-20~21: 1630-0000 UT / D=00-02 UT
2004-11-19~20: cloudy
2004-11-18~19: cloudy 20-01 & 04- UT / no aurora
2004-11-17~18: 2300-2320 UT / cloudy 2320-0100 / no aurora
2004-11-16~17: 1730-2230 UT
2004-11-15~16: no aurora
2004-11-14~15: cloudy
2004-11-13~14: all night after 00 UT (cloudy 20-23, 0140-0230) / pulsation after
2004-11-12~13: all night D=1530-1630 / 1630-2230 / weak D after
2004-11-11~12: all night after 2230 UT (cloudy -1830, 2100-2240) / D=23-01 UT / pulsation 01-05 UT
2004-11-10~11: 1530-2130 UT (but cloudy until 2000) / D=22-03 UT
2004-11-09~10: all night from 1520 (always some cloud, cloudy 0000-0120, 0230-)
2004-11-08~09: all night (cloudy -2100, 2130-2220, 2350-0030, 0140-0200, 0250-0450) / daylight=0530 UT
2004-11-07~08: all night storm (cloudy 1500-2040, 2230-0100) / daylight=0520 UT
2004-11-06~07: 1930-1950 UT / light cloud from 22 UT
2004-11-05~06: cloudy
2004-11-04~05: cloudy
2004-11-03~04: 1710-2320 (cloudy 1830-2030) & D=2320-0120 UT / cloudy
2004-11-02~03: cloudy until 2150 UT / 2150-00 UT / no aurora
2004-11-01~02: 2210-2250 UT / cloudy after 02 UT

2004-10-31~01: 1905-0040 & D=0040-0200 UT
2004-10-30~31: cloudy
2004-10-29~30: 1715-2000 & omega=2350-0130 & D=0130-0230 UT
2004-10-28~29: 2055-2300 UT / no aurora
2004-10-27~28: no aurora / lunar eclipse 03-04 UT
2004-10-26~27: cloudy
2004-10-25~26: cloudy
2004-10-24~25: cloudy
2004-10-23~24: cloudy
2004-10-22~23: cloudy
2004-10-21~22: cloudy
2004-10-20~21: cloudy
2004-10-19~20: cloudy
2004-10-18~19: cloudy
2004-10-17~18: no aurora
2004-10-16~17: no aurora
2004-10-15~16: cloudy until 23 UT / D=0100-0200 UT
2004-10-14~15: 1810-2000 & 2040-2050 / cloudy after 22 UT
2004-10-13~14: 1700-0030 UT (D=0030-0110 UT)
2004-10-12~13: 1900-1920 & 2125-2320 & 01-03 UT (D=0030-04 UT)
2004-10-11~12: 2300-0000 UT (D=0000-0400 UT)
2004-10-10~11: 2120-2300 UT (D=0000-0250 UT)
2004-10-09~10: 2220-0000 UT (D=0150-0230 UT)
2004-10-08~09: no aurora until 19 UT / cloudy
2004-10-07~08: cloudy
2004-10-06~07: 1900-1920 UT / cloudy after 20 UT
2004-10-05~06: cloudy / 2140-2250 UT through cloud / no aurora
2004-10-04~05: cloudy (1850-2030 UT though cloud)
2004-10-03~04: 1745-0050 UT (D=1920-2040, 0100-0220 UT) / cloudy after 02 UT
2004-10-02~03: 1745-1925 UT / cloudy / 2245-2300 UT / no aurora
2004-10-01~02: 1900-2110 UT / no aurora

2004-09-30~01: 1900-2100 UT / no aurora
2004-09-29~30: 2055-2120 UT / 2240-2250 UT / otherwize no aurora
2004-09-28~29: cloudy+moon
2004-09-27~28: cloudy
2004-09-26~27: cloudy
2004-09-25~26: cloudy
2004-09-24~25: cloudy
2004-09-23~24: cloudy
2004-09-22~23: cloudy
2004-09-21~22: cloudy
2004-09-20~21: cloudy / no aurora 19-20 UT
2004-09-19~20: cloudy / 0025-0100 UT / D=01-02 UT
2004-09-18~19: cloudy
2004-09-17~18: cloudy
2004-09-16~17: 19-0230 UT all night
2004-09-15~16: 19-02 UT all night (2230-0040 UT omega-pulsating)
2004-09-14~15: 19-02 UT all-night
2004-09-13~14: 20-02 UT all-night (22-23 UT corona, 01-02 UT omega)
2004-09-12~13: cloudy
2004-09-11~12: 2030-2130 UT / D=2130-0000 UT
2004-09-10~11: no aurora
2004-09-09~10: no aurora(?)
2004-09-08~09: no aurora
2004-09-07~08: 1920-2000 UT / 2120-2220 UT / D=0000-0120 UT
2004-09-06~07: 2350-0130 UT
2004-09-05~06: 2115-2215 UT / 2250-2350 UT / 0020-0050 UT
2004-09-04~05: no aurora
2004-09-03~04: no aurora
2004-09-02~03: cloudy
2004-09-01~02: cloudy

2004-08-31~ 1: 2210-0000 UT
2004-08-30~31: 2105-2130 UT / cloudy after 2130 UT
2004-08-29~30: 2120-2140 UT & 2200-2220 UT
2004-08-28~29: cloudy
2004-08-27~28: cloudy
2004-08-26~27: 2245-2330 UT
2004-08-25~26: not visible or no aurora
2004-08-24~25: not visible or no aurora
2004-08-23~24: cloudy
2004-08-22~23: cloudy
2004-08-21~22: cloudy
2004-08-20~21: cloudy
2004-08-19~20: cloudy
2004-08-18~19: not visible (not yet)

--------------------------------------------------------
Spring 2004

2004-04-26~27: not visible or no aurora
2004-04-25~26: not visible or no aurora
2004-04-24~25: not visible or no aurora
2004-04-23~24: cloudy
2004-04-22~23: cloudy = end of season
2004-04-21~22: cloudy
2004-04-20~21: cloudy
2004-04-19~20: 2200-2210 UT
2004-04-18~19: 2035-2110 UT / cloudy in between / 2255-2330 UT
2004-04-17~18: no aurora
2004-04-16~17: cloudy
2004-04-15~16: 2050-2210 & 2320-0030 UT
2004-04-14~15: no aurora
2004-04-13~14: cloudy
!!! IRF server was down for 2004-04-09~13 (during Easter)
2004-04-08~09: cloudy
2004-04-07~08: 1934-2155 & 2230-0110 UT
2004-04-06~07: 1920-1955 & 2105-0020 UT
2004-04-05~06: 2125-0210 UT (without break) / cloudy until 20 UT
2004-04-04~05: no aurora / cloudy 22-24 UT
2004-04-03~04: 1930-0200 UT (all night without break)
2004-04-02~03: no aurora
2004-04-01~02: 2000-2020 & 2340-0040 UT (weak)

2004-03-31~01: 2315-2330 UT (weak)
2004-03-30~31: 1955-2200 UT / cloudy after 23 UT (camera problem)
2004-03-29~30: no aurora
2004-03-28~29: 1905-2030 & 2255-0000 UT
2004-03-27~28: 1940-2330 & 0100-0120 UT
2004-03-26~27: 1935-2050 UT / otherwise mostly cloudy
2004-03-25~26: no aurora
2004-03-24~25: cloudy after 23 UT / otherwise no aurora
2004-03-23~24: cloudy (faint through cloud 1954, 2010-2011, UT)
2004-03-22~23: cloudy (faint through cloud 2022-2025, 2032, 2049 UT, seen through cloud 2322-2344 UT)
2004-03-21~22: cloudy
2004-03-20~21: cloudy
2004-03-19~20: cloudy
2004-03-18~19: cloudy
2004-03-17~18: cloudy (seen through cloud 2320-2345 UT)
2004-03-16~17: 1940-0300 UT (all night without break!)
2004-03-15~16: cloudy
2004-03-14~15: cloudy (faint through cloud 2035-2045 UT, 0220-0300 pulsation)
2004-03-13~14: 1755-0320 UT (all night without break!)
2004-03-12~13: cloudy
2004-03-11~12: 1725-0100 (without break!) / cloudy after 01 UT
2004-03-10~11: 1830-0345 (all night without break!)
2004-03-09~10: 1737-1740 / cloudy 18-21 & 23-02 UT (seen through cloud 1925-2300, 0020-0030, 0055-0340 UT or nearly all night).
2004-03-08~09: no aurora
2004-03-07~08: 2025-2310 UT (weak)
2004-03-06~07: cloudy after 21 UT / otherwise no aurora
2004-03-05~06: cloudy
2004-03-04~05: no aurora
2004-03-03~04: 1750-1850 UT (weak)
2004-03-02~03: 2025-2150 UT
2004-03-01~02: 1840-2130 UT / cloudy / 2300-0420 UT

2004-02-29~01: cloudy from 19 UT to 03 UT / otherwise no aurora
2004-02-28~29: 1940-0055 UT
2004-02-27~28: 1905-2330 UT
2004-02-26~27: cloudy
2004-02-25~26: 2220-2250 UT / otherwise mostly cloudy (through cloud 2310-2320 UT, faint 0050-0140 UT)
2004-02-24~25: cloudy (seen through cloud 2235-2315 UT)
2004-02-23~24: 1750-0350 UT (all night, mostly weak)
2004-02-22~23: 1910-2200 UT & (0100-0400 UT weak aurora)
2004-02-21~22: 2215-2240 & 2310-0330 UT
2004-02-20~21: 1635-2230 & 2330-0400 UT (mostly weak)
2004-02-19~20: 1825-0400 UT (all night, mostly weak)
2004-02-18~19: cloudy (faint through cloud 1950-1954 & 2140-2144 UT)
2004-02-17~18: 1920-0500 UT (all night, weak aurora)
2004-02-16~17: cloudy
2004-02-15~16: 1650-1655 & 1835-1840 UT / cloudy after 20 UT
2004-02-14~15: 1620-2340 UT / cloudy (seen through cloud 0240-0320 UT)
2004-02-13~14: 1630-1640 / cloudy from 1720 UT to 0120 UT (seen through cloud 1815-1835 & 2045-2135 & 2150-2215 & 2245-0005 UT) / 0110-0530 UT
2004-02-12~13: 1550-1850, 1930-2130 UT / cloudy after 22 UT
2004-02-11~12: cloudy until 02 UT (seen through cloud 1618-1654 & 1738-1803 & 2213-2220 UT) / 0210-0240 UT
2004-02-10~11: 2150-2310 UT
2004-02-09~10: 1800-0300 UT (nearly all night without break!)
2004-02-08~09: 2030-2200 UT / cloudy from 22 UT to 01 UT
2004-02-07~08: 1900-2000 UT / cloudy after 21 UT
2004-02-06~07: intermittently cloudy / 1700-1930 UT & 2120-2130 UT
2004-02-05~06: cloudy
2004-02-04~05: cloudy or dome problem
2004-02-03~04: 1600-2230 UT / cloudy after 01 UT
2004-02-02~03: cloudy from 21 UT to 04 UT / otherwise no aurora
2004-02-01~02: 2050-2130 UT / otherwise intermittently cloudy

2004-01-31~01: cloudy until 22 UT / dome problem / cloudy after 03 UT
2004-01-30~31: 1955-2300 UT,
2004-01-29~30: cloudy after 18 UT
2004-01-28~29: dome problem / 1910-1925 UT / dome problem & cloudy
2004-01-27~28: cloudy / 2005-2330 UT / cloudy until 02 UT / no aurora
2004-01-26~27: cloudy / 0040-0340 UT / cloudy
2004-01-25~26: cloudy / 1630-1920 UT / cloudy until 03 UT/ no aurora
2004-01-24~25: cloudy (seen through cloud 0035-0045 & 0200-0530 UT)
2004-01-23~24: cloudy / 1820-0400 UT
2004-01-22~23: cloudy / 1840-1940 UT / cloudy / 0300-0600 UT
2004-01-21~22: 1500-0550 UT (all night without break!)
2004-01-20~21: 1515-0615 UT (all night except 1645-1845 UT)
2004-01-19~20: cloudy
2004-01-18~19: cloudy or no aurora
2004-01-17~18: 2100-2200 UT
2004-01-16~17: cloudy (seen through cloud 1700-0000 UT)
2004-01-15~16: 1450-0630 UT (all night without break!)
2004-01-14~15: 17-05 UT
2004-01-13~14: cloudy
2004-01-12~13: cloudy (seen through cloud 2320-2330 & 0020-0040 UT)
2004-01-11~12: cloudy
2004-01-10~11: 15-20 UT
2004-01-09~10: 16-02 UT
2004-01-08~09: 19-23 UT
2004-01-07~08: 17-21 UT
2004-01-06~07: cloudy
2004-01-05~06: 15-02 UT
2004-01-04~05: 17-00 UT
2004-01-03~04: cloudy/no aurora
2004-01-02~03: 19-02 UT
2004-01-01~02: 17-03 UT