Alert archive / Iowa / Freeze Warnings in 2011
Freeze Warning 2, NWS La Crosse, WI
NWS La Crosse, WI issued this freeze warning at Oct 20, 2011, 3:40 AM CDT for 7 counties in Wisconsin; 8 counties in Iowa; Houston County, Wabasha County, Winona County, Minnesota. It took effect at Oct 21, 2011, 1:00 AM CDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Oct 20, 2011, 3:40 AM CDT (08:40 UTC)
- In effect from
- Oct 21, 2011, 1:00 AM CDT
- Expired
- Oct 21, 2011, 9:00 AM CDT
- In force
- 8 hr
- Issued by
- NWS La Crosse, WI
Counties Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Houston County, MN, Wabasha County, MN, Winona County, MN, Buffalo County, WI, Crawford County, WI, Grant County, WI, La Crosse County, WI, Richland County, WI, Trempealeau County, WI, Vernon County, WI
The radar
The La Crosse radar (KARX), 51 km from the middle of the area, began a volume at 08:45 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 8.7 hours before the alert went out and 219 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1486 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
839 WWUS73 KARX 200840 NPWARX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 340 AM CDT THU OCT 20 2011 ...FREEZING TEMPERATURES EXPECTED TONIGHT... .LOW TEMPERATURES WILL FALL INTO THE UPPER 20S ACROSS MUCH OF THE AREA TONIGHT. THIS WILL OCCUR AS HIGH PRESSURE BUILDS OVER THE UPPER MIDWEST ALLOWING THE SKIES TO BECOME CLEAR AND THE WINDS TO BECOME LIGHT. WITH THESE TEMPERATURES...A KILLING FREEZE WILL OCCUR ENDING THE GROWING SEASON FOR THE YEAR. IAZ008>011-018-019-029-030-MNZ079-088-096-WIZ032-033-041-053>055- 061-201800- /O.NEW.KARX.FZ.W.0002.111021T0600Z-111021T1400Z/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU-LA CROSSE- VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...WINONA...LA CROSSE...VIROQUA...PRAIRIE DU CHIEN... RICHLAND CENTER...PLATTEVILLE 340 AM CDT THU OCT 20 2011 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM CDT FRIDAY... THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 1 AM TO 9 AM CDT FRIDAY. * TEMPERATURES IN THE UPPER 20S ARE EXPECTED LATE TONIGHT THROUGH EARLY FRIDAY MORNING. * A KILLING FREEZE WILL OCCUR ENDING THE GROWING SEASON FOR THE YEAR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ 04 WEATHER.GOV/LACROSSE
4 follow-up statements
012 WWUS73 KARX 201833 NPWARX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 133 PM CDT THU OCT 20 2011 ...FREEZING TEMPERATURES EXPECTED TONIGHT... .LOW TEMPERATURES TONIGHT WILL DROP INTO THE UPPER 20S TO THE LOWER 30S UNDER CLEAR SKIES AND DECREASING WINDS. THESE TEMPERATURES WILL DAMAGE OR KILL SENSITIVE VEGETATION AND BASICALLY END THE GROWING SEASON FOR AREAS THAT HAVE YET TO HAVE A KILLING FROST OR FREEZE THIS FALL. THIS WILL LIKELY BE THE END TO FROST AND FREEZE HEADLINES FOR THE SEASON. IAZ008>011-018-019-029-030-MNZ079-088-096-WIZ032-033-041-053>055- 061-210500- /O.CON.KARX.FZ.W.0002.111021T0600Z-111021T1400Z/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU-LA CROSSE- VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...WINONA...LA CROSSE...VIROQUA...PRAIRIE DU CHIEN... RICHLAND CENTER...PLATTEVILLE 133 PM CDT THU OCT 20 2011 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT FRIDAY... * TEMPERATURES ARE EXPECTED TO DROP INTO THE UPPER 20S TO LOWER 30S OVERNIGHT. * A KILLING FREEZE IS EXPECTED FOR MOST AREAS ENDING THE GROWING SEASON FOR THE YEAR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ SHEA WEATHER.GOV/LACROSSE
513 WWUS73 KARX 210152 NPWARX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 852 PM CDT THU OCT 20 2011 ...FREEZING TEMPERATURES EXPECTED TONIGHT... .LOW TEMPERATURES TONIGHT WILL DROP INTO THE UPPER 20S TO THE LOWER 30S UNDER CLEAR SKIES AND DECREASING WINDS. THESE TEMPERATURES WILL DAMAGE OR KILL SENSITIVE VEGETATION AND BASICALLY END THE GROWING SEASON FOR AREAS THAT HAVE YET TO HAVE A KILLING FROST OR FREEZE THIS FALL. THIS WILL LIKELY BE THE END TO FROST AND FREEZE HEADLINES FOR THE SEASON. IAZ008>011-018-019-029-030-MNZ079-088-096-WIZ032-033-041-053>055- 061-211000- /O.CON.KARX.FZ.W.0002.111021T0600Z-111021T1400Z/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU-LA CROSSE- VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...WINONA...LA CROSSE...VIROQUA...PRAIRIE DU CHIEN... RICHLAND CENTER...PLATTEVILLE 852 PM CDT THU OCT 20 2011 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM CDT FRIDAY... * TEMPERATURES ARE EXPECTED TO DROP INTO THE UPPER 20S TO LOWER 30S OVERNIGHT. * A KILLING FREEZE IS EXPECTED FOR MOST AREAS ENDING THE GROWING SEASON FOR THE YEAR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ RABERDING WEATHER.GOV/LACROSSE
495 WWUS73 KARX 210808 NPWARX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 308 AM CDT FRI OCT 21 2011 ...FREEZING TEMPERATURES EXPECTED THIS MORNING... .TEMPERATURES EARLY THIS MORNING WILL FALL INTO THE UPPER 20S AND LOWER 30S UNDER CLEAR SKIES AND LIGHT WINDS. THESE TEMPERATURES WILL DAMAGE OR KILL SENSITIVE VEGETATION AND BASICALLY END THE GROWING SEASON FOR AREAS THAT HAVE YET TO HAVE A KILLING FROST OR FREEZE THIS AUTUMN. THIS WILL LIKELY BE THE END TO FROST AND FREEZE HEADLINES FOR THE SEASON. IAZ008>011-018-019-029-030-MNZ079-088-096-WIZ032-033-041-053>055- 061-211400- /O.CON.KARX.FZ.W.0002.000000T0000Z-111021T1400Z/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU-LA CROSSE- VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...WINONA...LA CROSSE...VIROQUA...PRAIRIE DU CHIEN... RICHLAND CENTER...PLATTEVILLE 308 AM CDT FRI OCT 21 2011 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING... * TEMPERATURES ARE EXPECTED TO DROP INTO THE UPPER 20S AND LOWER 30S EARLY THIS MORNING. * THIS WILL RESULT IN A KILLING FREEZE...WHICH IS EXPECTED TO END THE GROWING SEASON FOR THE YEAR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE EXPECTED. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ BOYNE WEATHER.GOV/LACROSSE
338 WWUS73 KARX 211410 NPWARX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 910 AM CDT FRI OCT 21 2011 ...FREEZE WARNING HAS EXPIRED... .SUNSHINE HAS ALLOWED TEMPERATURES TO CLIMB TO AT OR ABOVE FREEZING ACROSS MUCH OF THE UPPER MISSISSIPPI RIVER VALLEY REGION. LOOK FOR TEMPERATURES TO CONTINUE TO RISING THROUGH THE MORNING. IAZ008>011-018-019-029-030-MNZ079-088-096-WIZ032-033-041-053>055- 061-211515- /O.EXP.KARX.FZ.W.0002.000000T0000Z-111021T1400Z/ MITCHELL-HOWARD-WINNESHIEK-ALLAMAKEE-FLOYD-CHICKASAW-FAYETTE- CLAYTON-WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU-LA CROSSE- VERNON-CRAWFORD-RICHLAND-GRANT- INCLUDING THE CITIES OF...DECORAH...WAUKON...CHARLES CITY... OELWEIN...WINONA...LA CROSSE...VIROQUA...PRAIRIE DU CHIEN... RICHLAND CENTER...PLATTEVILLE 910 AM CDT FRI OCT 21 2011 ...FREEZE WARNING HAS EXPIRED... TEMPERATURES HAVE RISEN TO AT OR ABOVE FREEZING ACROSS MUCH OF THE AREA...AND WILL CONTINUE TO RISE THROUGH THE MORNING. THEREFORE THE FREEZE WARNING HAS BEEN ALLOWED TO EXPIRE. $$ AJ WEATHER.GOV/LACROSSE
Nearby
Freeze Warnings in Iowa, 2011Freeze Warnings in Wisconsin, 2011Freeze Warnings in Minnesota, 2011Every freeze warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.