Alert archive / Wisconsin / Frost Advisories in 2012
Frost Advisory 2, NWS La Crosse, WI
NWS La Crosse, WI issued this frost advisory at Apr 20, 2012, 3:40 PM CDT for 5 counties in Wisconsin; Houston County, Wabasha County, Winona County, Minnesota; Allamakee County, Clayton County, Iowa. It took effect at Apr 21, 2012, 1:00 AM CDT. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Apr 20, 2012, 3:40 PM CDT (20:40 UTC)
- In effect from
- Apr 21, 2012, 1:00 AM CDT
- Expired
- Apr 21, 2012, 3:49 AM CDT
- In force
- 3 hr
- Issued by
- NWS La Crosse, WI
Counties Allamakee County, IA, Clayton County, IA, Houston County, MN, Wabasha County, MN, Winona County, MN, Buffalo County, WI, Crawford County, WI, Grant County, WI, La Crosse County, WI, Trempealeau County, WI
The radar
The La Crosse radar (KARX), 24 km from the middle of the area, began a volume at 20:42 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 12:00Z, 8.7 hours before the alert went out and 218 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
- 1625 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -199 m²/s²
- 0-3 km storm-relative helicity
- -182 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
313 WWUS73 KARX 202040 NPWARX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 340 PM CDT FRI APR 20 2012 ...FREEZING TEMPERATURES EXPECTED FOR PARTS OF THE AREA TONIGHT... .CLEAR TO PARTLY CLOUDY SKIES WILL ALLOW TEMPERATURES TO DROP INTO THE MID 20S TO LOW 30S LATER TONIGHT AND EARLY SATURDAY MORNING AS COLDER AND DRIER HIGH PRESSURE BUILDS INTO THE AREA. WITH MINIMAL CLOUD COVER AND LIGHT WINDS TONIGHT...FREEZING TEMPERATURES AND AREAS OF FROST ARE EXPECTED. DAMAGE TO EARLY FLOWERING FRUIT TREES AND OTHER COLD SENSITIVE VEGETATION IS POSSIBLE. WIZ017-029-034-042>044-053-055-210445- /O.CON.KARX.FZ.W.0009.120421T0600Z-120421T1300Z/ TAYLOR-CLARK-JACKSON-MONROE-JUNEAU-ADAMS-VERNON-RICHLAND- INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE... BLACK RIVER FALLS...SPARTA...TOMAH...MAUSTON...VIROQUA... RICHLAND CENTER 340 PM CDT FRI APR 20 2012 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT SATURDAY... * LOWS TONIGHT ARE EXPECTED TO FALL INTO THE 25 TO 32 DEGREE RANGE. * LOWS THIS COLD COULD DAMAGE EARLY FLOWERING FRUIT TREES AND OTHER COLD SENSITIVE VEGETATION THAT HAS ALREADY LEAFED OUT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL UNPROTECTED CROPS AND OTHER SENSITIVE VEGETATION. && $$ IAZ011-030-MNZ079-088-096-WIZ032-033-041-054-061-210445- /O.NEW.KARX.FR.Y.0002.120421T0600Z-120421T1300Z/ ALLAMAKEE-CLAYTON-WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU- LA CROSSE-CRAWFORD-GRANT- INCLUDING THE CITIES OF...WAUKON...WINONA...LA CROSSE... PRAIRIE DU CHIEN...PLATTEVILLE 340 PM CDT FRI APR 20 2012 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT SATURDAY... THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 1 AM TO 8 AM CDT SATURDAY. * LOWS TONIGHT WILL FALL INTO THE 30 TO 32 DEGREE RANGE...WITH AREAS OF FROST EXPECTED. * THE COLD TEMPERATURES AND FROST COULD DAMAGE EARLY FLOWERING FRUIT TREES AND OTHER COLD SENSITIVE VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ WETENKAMP WEATHER.GOV/LACROSSE
2 follow-up statements
905 WWUS73 KARX 210245 NPWARX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 945 PM CDT FRI APR 20 2012 ...FREEZING TEMPERATURES FOR PARTS OF THE AREA TONIGHT... .A FROST TO A FREEZE IS EXPECTED FOR PARTS OF THE REGION... GENERALLY FROM AROUND AND TO THE EAST OF THE MISSISSIPPI RIVER. TEMPERATURES WILL BOTTOM OUT IN THE MID 20S TO LOW 30S. DAMAGE TO EARLY FLOWERING FRUIT TREES AND OTHER COLD SENSITIVE VEGETATION IS POSSIBLE IF PRECAUTIONS ARE NOT TAKEN. WIZ017-029-034-042>044-053-055-211045- /O.CON.KARX.FZ.W.0009.120421T0600Z-120421T1300Z/ TAYLOR-CLARK-JACKSON-MONROE-JUNEAU-ADAMS-VERNON-RICHLAND- INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE... BLACK RIVER FALLS...SPARTA...TOMAH...MAUSTON...VIROQUA... RICHLAND CENTER 945 PM CDT FRI APR 20 2012 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT SATURDAY... * LOWS TONIGHT WILL FALL INTO THE 25 TO 32 DEGREE RANGE. * LOWS THIS COLD COULD DAMAGE EARLY FLOWERING FRUIT TREES AND OTHER COLD SENSITIVE VEGETATION THAT HAS ALREADY LEAFED OUT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL UNPROTECTED CROPS AND OTHER SENSITIVE VEGETATION. && $$ IAZ011-030-MNZ079-088-096-WIZ032-033-041-054-061-211045- /O.CON.KARX.FR.Y.0002.120421T0600Z-120421T1300Z/ ALLAMAKEE-CLAYTON-WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU- LA CROSSE-CRAWFORD-GRANT- INCLUDING THE CITIES OF...WAUKON...WINONA...LA CROSSE... PRAIRIE DU CHIEN...PLATTEVILLE 945 PM CDT FRI APR 20 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM 1 AM TO 8 AM CDT SATURDAY... * LOWS TONIGHT WILL FALL INTO THE 30 TO 32 DEGREE RANGE. AREAS OF FROST ARE EXPECTED. * THE COLD TEMPERATURES AND FROST COULD DAMAGE EARLY FLOWERING FRUIT TREES AND OTHER COLD SENSITIVE VEGETATION. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ RIECK WEATHER.GOV/LACROSSE
223 WWUS73 KARX 210849 NPWARX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 349 AM CDT SAT APR 21 2012 ...FREEZE WARNING CONTINUES...FROST ADVISORY HAS BEEN CANCELLED... .THE FROST ADVISORY THAT WAS IN EFFECT FOR PARTS OF THE AREA HAS BEEN CANCELLED. THE FREEZE WARNING FOR PARTS OF CENTRAL AND NORTH- CENTRAL WISCONSIN REMAINS IN EFFECT. SOME CLOUDS HAVE SPREAD ACROSS THE AREA THIS MORNING...HALTING THE TEMPERATURE DROP AND EVEN ALLOWING TEMPERATURES TO RISE A FEW DEGREES AT SOME LOCATIONS. MORE CLOUDS ARE UPSTREAM...READY TO SPREAD ACROSS THE AREA THROUGH SUNRISE. SOME LIGHT EAST AND SOUTHEAST WINDS CONTINUE ACROSS THE AREA AS WELL. WITH LOWS IN THE ADVISORY AREA NOW EXPECTED TO BE MORE IN THE MID 30S WITH ANY FROST RATHER PATCHY...THE ADVISORY HAS BEEN CANCELLED. THE FREEZE WARNING CONTINUES...BUT LOWS IN THE WARNING AREA ARE NOW EXPECTED TO BE MORE IN THE UPPER 20S AND LOWER 30S...NOT AS FAVORABLE FOR WIDESPREAD FREEZING CONDITIONS. SOME DAMAGE TO EARLY FLOWERING FRUIT TREES AND OTHER COLD SENSITIVE VEGETATION IS STILL POSSIBLE. IAZ011-030-MNZ079-088-096-WIZ032-033-041-054-061-211000- /O.CAN.KARX.FR.Y.0002.000000T0000Z-120421T1300Z/ ALLAMAKEE-CLAYTON-WABASHA-WINONA-HOUSTON-BUFFALO-TREMPEALEAU- LA CROSSE-CRAWFORD-GRANT- INCLUDING THE CITIES OF...WAUKON...WINONA...LA CROSSE... PRAIRIE DU CHIEN...PLATTEVILLE 349 AM CDT SAT APR 21 2012 ...FROST ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS CANCELLED THE FROST ADVISORY. LOWS ARE EXPECTED TO BE MORE IN THE MID 30S...WITH ANY FROST EXPECTED TO BE ISOLATED. THUS THE ADVISORY HAS BEEN CANCELLED. $$ WIZ017-029-034-042>044-053-055-211300- /O.CON.KARX.FZ.W.0009.000000T0000Z-120421T1300Z/ TAYLOR-CLARK-JACKSON-MONROE-JUNEAU-ADAMS-VERNON-RICHLAND- INCLUDING THE CITIES OF...MEDFORD...NEILLSVILLE... BLACK RIVER FALLS...SPARTA...TOMAH...MAUSTON...VIROQUA... RICHLAND CENTER 349 AM CDT SAT APR 21 2012 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 8 AM CDT THIS MORNING... * LOWS THIS MORNING WILL FALL INTO THE UPPER 20S TO LOWER 30S. * LOWS THIS COLD COULD DAMAGE EARLY FLOWERING FRUIT TREES AND OTHER COLD SENSITIVE VEGETATION THAT HAS ALREADY LEAFED OUT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS MAY DAMAGE UNPROTECTED CROPS AND OTHER SENSITIVE VEGETATION. && $$ RRS WEATHER.GOV/LACROSSE
The office that day
Everything else NWS La Crosse, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 3:38 AM CDT | Freeze Warning | ARX | Adams, Clark, Jackson, Juneau, Monroe, Richland and 2 more | 28 hr |
Nearby
Frost Advisories in Wisconsin, 2012Frost Advisories in Minnesota, 2012Frost Advisories in Iowa, 2012Every frost advisory in 2012
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.