NOAA / Space Weather Prediction Center

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Space Weather Alerts

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Alerts Issued in April 2007


Space Weather Message Code: WARK05
Serial Number: 601
Issue Time: 2007 Apr 30 0543 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 600
Valid From: 2007 Apr 29 2035 UTC
Now Valid Until: 2007 Apr 30 1600 UTC
Warning Condition: Onset


Space Weather Message Code: ALTEF3
Serial Number: 1304
Issue Time: 2007 Apr 30 0502 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 30 0500 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 19400 pfu


Space Weather Message Code: ALTK05
Serial Number: 576
Issue Time: 2007 Apr 30 0151 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2007 Apr 30 0150 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: Yes
NOAA Scale: G1 - Minor


Space Weather Message Code: WARK04
Serial Number: 1394
Issue Time: 2007 Apr 30 0018 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 30 0020 UTC
Valid To: 2007 Apr 30 1600 UTC
Warning Condition: Persistence


Space Weather Message Code: WARK05
Serial Number: 600
Issue Time: 2007 Apr 29 2035 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2007 Apr 29 2035 UTC
Valid To: 2007 Apr 30 0600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor


Space Weather Message Code: WARK04
Serial Number: 1393
Issue Time: 2007 Apr 29 1532 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1392
Valid From: 2007 Apr 27 1719 UTC
Now Valid Until: 2007 Apr 29 2359 UTC
Warning Condition: Persistence


Space Weather Message Code: ALTEF3
Serial Number: 1303
Issue Time: 2007 Apr 29 0513 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 29 0512 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 3410 pfu


Space Weather Message Code: ALTK05
Serial Number: 575
Issue Time: 2007 Apr 29 0212 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2007 Apr 29 0210 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: Yes
NOAA Scale: G1 - Minor


Space Weather Message Code: WARK05
Serial Number: 599
Issue Time: 2007 Apr 29 0206 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2007 Apr 29 0207 UTC
Valid To: 2007 Apr 29 1600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor


Space Weather Message Code: WARK04
Serial Number: 1392
Issue Time: 2007 Apr 28 2306 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1391
Valid From: 2007 Apr 27 1719 UTC
Now Valid Until: 2007 Apr 29 1600 UTC
Warning Condition: Persistence


Space Weather Message Code: ALTEF3
Serial Number: 1302
Issue Time: 2007 Apr 28 1532 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 28 1510 UTC
Station: GOES12
Observed Yesterday: No


Space Weather Message Code: WARK04
Serial Number: 1391
Issue Time: 2007 Apr 28 1513 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1390
Valid From: 2007 Apr 27 1719 UTC
Now Valid Until: 2007 Apr 28 2359 UTC
Warning Condition: Persistence


Space Weather Message Code: ALTK05
Serial Number: 574
Issue Time: 2007 Apr 28 0131 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2007 Apr 28 0131 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: Yes
NOAA Scale: G1 - Minor


Space Weather Message Code: WARK05
Serial Number: 598
Issue Time: 2007 Apr 27 2321 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2007 Apr 27 2321 UTC
Valid To: 2007 Apr 28 1600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor


Space Weather Message Code: WATA20
Serial Number: 442
Issue Time: 2007 Apr 27 2004 UTC

WATCH: Geomagnetic A-index of 20 or greater predicted
Valid for UTC Day: 2007 Apr 28


Space Weather Message Code: ALTK04
Serial Number: 1258
Issue Time: 2007 Apr 27 1720 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2007 Apr 27 1720 UTC
Synoptic Period: 1500-1800 UTC
Station: Boulder
Active Warning: Yes


Space Weather Message Code: WARK04
Serial Number: 1390
Issue Time: 2007 Apr 27 1719 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 27 1719 UTC
Valid To: 2007 Apr 28 1600 UTC
Warning Condition: Onset


Space Weather Message Code: ALTK05
Serial Number: 573
Issue Time: 2007 Apr 23 0533 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2007 Apr 23 0532 UTC
Synoptic Period: 0300-0600 UTC
Station: Boulder
Active Warning: No
NOAA Scale: G1 - Minor


Space Weather Message Code: ALTK04
Serial Number: 1257
Issue Time: 2007 Apr 23 0222 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2007 Apr 23 0220 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: Yes


Space Weather Message Code: WARK04
Serial Number: 1389
Issue Time: 2007 Apr 22 1721 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 22 1722 UTC
Valid To: 2007 Apr 23 1600 UTC
Warning Condition: Onset


Space Weather Message Code: WARK04
Serial Number: 1388
Issue Time: 2007 Apr 19 0122 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 19 0200 UTC
Valid To: 2007 Apr 19 1600 UTC
Warning Condition: Onset


Space Weather Message Code: ALTK04
Serial Number: 1256
Issue Time: 2007 Apr 18 0241 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2007 Apr 18 0240 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: Yes


Space Weather Message Code: WARK04
Serial Number: 1387
Issue Time: 2007 Apr 18 0238 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 18 0238 UTC
Valid To: 2007 Apr 18 1600 UTC
Warning Condition: Onset


Space Weather Message Code: WARK04
Serial Number: 1386
Issue Time: 2007 Apr 17 1735 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 17 1735 UTC
Valid To: 2007 Apr 17 2359 UTC
Warning Condition: Onset


Space Weather Message Code: ALTEF3
Serial Number: 1301
Issue Time: 2007 Apr 10 1151 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 10 1135 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 1380 pfu


Space Weather Message Code: ALTEF3
Serial Number: 1301
Issue Time: 2007 Apr 10 1151 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 10 1135 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 1380 pfu


Space Weather Message Code: ALTEF3
Serial Number: 1300
Issue Time: 2007 Apr 09 1131 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 09 1105 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 24400 pfu


Space Weather Message Code: ALTK04
Serial Number: 1255
Issue Time: 2007 Apr 09 0230 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2007 Apr 09 0229 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: Yes


Space Weather Message Code: WARK04
Serial Number: 1385
Issue Time: 2007 Apr 08 2352 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 08 2350 UTC
Valid To: 2007 Apr 09 1600 UTC
Warning Condition: Onset


Space Weather Message Code: ALTEF3
Serial Number: 1299
Issue Time: 2007 Apr 08 0500 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 08 0500 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 22000 pfu


Space Weather Message Code: ALTEF3
Serial Number: 1298
Issue Time: 2007 Apr 07 0503 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 07 0500 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 28000 pfu


Space Weather Message Code: ALTEF3
Serial Number: 1297
Issue Time: 2007 Apr 06 0505 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 06 0500 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 20100 pfu


Space Weather Message Code: ALTEF3
Serial Number: 1296
Issue Time: 2007 Apr 05 0507 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 05 0500 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 17100 pfu


Space Weather Message Code: ALTEF3
Serial Number: 1295
Issue Time: 2007 Apr 04 0532 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 04 0515 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 1950 pfu


Space Weather Message Code: ALTK04
Serial Number: 1254
Issue Time: 2007 Apr 04 0530 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2007 Apr 04 0530 UTC
Synoptic Period: 0300-0600 UTC
Station: Boulder
Active Warning: Yes


Space Weather Message Code: WARK04
Serial Number: 1384
Issue Time: 2007 Apr 03 2350 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1383
Valid From: 2007 Apr 03 1657 UTC
Now Valid Until: 2007 Apr 04 1600 UTC
Warning Condition: Persistence


Space Weather Message Code: WARK04
Serial Number: 1383
Issue Time: 2007 Apr 03 1656 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 03 1657 UTC
Valid To: 2007 Apr 03 2359 UTC
Warning Condition: Onset


Space Weather Message Code: ALTEF3
Serial Number: 1294
Issue Time: 2007 Apr 03 0500 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 03 0500 UTC
Station: GOES12
Observed Yesterday: Yes
Yesterday Maximum 2MeV Flux: 8480 pfu


Space Weather Message Code: ALTK04
Serial Number: 1253
Issue Time: 2007 Apr 03 0340 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2007 Apr 03 0337 UTC
Synoptic Period: 0300-0600 UTC
Station: Boulder
Active Warning: Yes


Space Weather Message Code: WARK04
Serial Number: 1382
Issue Time: 2007 Apr 02 2159 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 02 2200 UTC
Valid To: 2007 Apr 03 1600 UTC
Warning Condition: Onset


Space Weather Message Code: ALTEF3
Serial Number: 1293
Issue Time: 2007 Apr 02 1202 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2007 Apr 02 1140 UTC
Station: GOES12
Observed Yesterday: No


Space Weather Message Code: WARK05
Serial Number: 597
Issue Time: 2007 Apr 02 0855 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 596
Valid From: 2007 Apr 02 0620 UTC
Now Valid Until: 2007 Apr 02 1200 UTC
Warning Condition: Onset


Space Weather Message Code: ALTK05
Serial Number: 572
Issue Time: 2007 Apr 02 0636 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2007 Apr 02 0632 UTC
Synoptic Period: 0600-0900 UTC
Station: Boulder
Active Warning: Yes
NOAA Scale: G1 - Minor


Space Weather Message Code: WARK06
Serial Number: 157
Issue Time: 2007 Apr 02 0626 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2007 Apr 02 0627 UTC
Valid To: 2007 Apr 02 0900 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate


Space Weather Message Code: WARK05
Serial Number: 596
Issue Time: 2007 Apr 02 0620 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2007 Apr 02 0620 UTC
Valid To: 2007 Apr 02 0900 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor


Space Weather Message Code: ALTK05
Serial Number: 571
Issue Time: 2007 Apr 02 0339 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2007 Apr 02 0337 UTC
Synoptic Period: 0300-0600 UTC
Station: Boulder
Active Warning: No
NOAA Scale: G1 - Minor


Space Weather Message Code: ALTK04
Serial Number: 1252
Issue Time: 2007 Apr 02 0220 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2007 Apr 02 0218 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: Yes


Space Weather Message Code: WARK04
Serial Number: 1381
Issue Time: 2007 Apr 01 2239 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 01 2240 UTC
Valid To: 2007 Apr 02 1600 UTC
Warning Condition: Onset


Space Weather Message Code: WARK04
Serial Number: 1380
Issue Time: 2007 Apr 01 1556 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 1379
Valid From: 2007 Apr 01 0050 UTC
Now Valid Until: 2007 Apr 01 2000 UTC
Warning Condition: Onset


Space Weather Message Code: ALTK05
Serial Number: 570
Issue Time: 2007 Apr 01 0857 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2007 Apr 01 0857 UTC
Synoptic Period: 0600-0900 UTC
Station: Boulder
Active Warning: Yes
NOAA Scale: G1 - Minor


Space Weather Message Code: WARK05
Serial Number: 595
Issue Time: 2007 Apr 01 0853 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2007 Apr 01 0900 UTC
Valid To: 2007 Apr 01 1600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor


Space Weather Message Code: ALTK05
Serial Number: 569
Issue Time: 2007 Apr 01 0206 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2007 Apr 01 0200 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: No
NOAA Scale: G1 - Minor


Space Weather Message Code: ALTK04
Serial Number: 1251
Issue Time: 2007 Apr 01 0145 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2007 Apr 01 0142 UTC
Synoptic Period: 0000-0300 UTC
Station: Boulder
Active Warning: Yes


Space Weather Message Code: WARK04
Serial Number: 1379
Issue Time: 2007 Apr 01 0041 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2007 Apr 01 0050 UTC
Valid To: 2007 Apr 01 1600 UTC
Warning Condition: Onset