Alert archive / Minnesota / Red Flag Warnings in 2012
Red Flag Warning 5, NWS La Crosse, WI
NWS La Crosse, WI issued this red flag warning at Sep 10, 2012, 2:40 PM CDT for 4 counties in Minnesota; 4 counties in Iowa. It took effect at Sep 11, 2012, 11:00 AM CDT. It was in force for 10 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
- Sep 10, 2012, 2:40 PM CDT (19:40 UTC)
- In effect from
- Sep 11, 2012, 11:00 AM CDT
- Expired
- Sep 11, 2012, 9:00 PM CDT
- In force
- 10 hr
- Issued by
- NWS La Crosse, WI
Counties Chickasaw County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Dodge County, MN, Fillmore County, MN, Mower County, MN, Olmsted County, MN
The radar
The La Crosse radar (KARX), 113 km from the middle of the area, began a volume at 19:43 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, 7.7 hours before the alert went out and 170 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
- 1552 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
919 WWUS83 KARX 101940 RFWARX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 240 PM CDT MON SEP 10 2012 ...DANGEROUS WEATHER CONDITIONS FOR WILDFIRES TUESDAY AFTERNOON AND EVENING... .DRY CONDITIONS ALONG WITH SOUTH WINDS OF 15 TO 25 MPH...GUSTING TO AROUND 35 MPH...WILL LEAD TO DANGEROUS WEATHER CONDITIONS FOR WILDFIRES. TEMPERATURES ARE EXPECTED TO CLIMB INTO THE UPPER 80S TO LOWER 90S DURING THE AFTERNOON HOURS WITH RELATIVE HUMIDITY VALUES FALLING INTO THE LOWER 20S. THE COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY WILL LEAD TO EXPLOSIVE FIRE GROWTH POTENTIAL. IAZ008-009-018-019-MNZ086-087-094-095-110345- /O.NEW.KARX.FW.W.0005.120911T1600Z-120912T0200Z/ MITCHELL-HOWARD-FLOYD-CHICKASAW-DODGE-OLMSTED-MOWER-FILLMORE- 240 PM CDT MON SEP 10 2012 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 9 PM CDT TUESDAY FOR STRONG SOUTHWEST WINDS AND LOW RELATIVE HUMIDITY. THE NATIONAL WEATHER SERVICE IN LA CROSSE HAS ISSUED A RED FLAG WARNING FOR PORTIONS OF SOUTHEAST MINNESOTA AND NORTHEAST IOWA...WHICH IS IN EFFECT FROM 11 AM TO 9 PM CDT TUESDAY. * AFFECTED AREA...PORTIONS OF SOUTHEAST MINNESOTA AND NORTHEAST IOWA. * WINDS...SOUTH 15 TO 25 MPH WITH GUSTS TO AROUND 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 20 PERCENT. * TEMPERATURES...IN THE MID 80S TO LOWER 90S. * IMPACTS...FIRES COULD START EASILY AND SPREAD QUICKLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ WETENKAMP
5 follow-up statements
736 WWUS83 KARX 110208 RFWARX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 908 PM CDT MON SEP 10 2012 ...DANGEROUS WEATHER CONDITIONS FOR WILDFIRES TUESDAY AFTERNOON AND EVENING... .DRY CONDITIONS ALONG WITH SOUTH WINDS OF 20 TO 25 MPH...GUSTING TO AROUND 35 MPH...WILL RESULT IN DANGEROUS WEATHER CONDITIONS FOR WILDFIRES. TEMPERATURES WILL CLIMB TO AROUND 90 DURING THE AFTERNOON HOURS WITH RELATIVE HUMIDITY VALUES FALLING INTO THE LOWER 20S. THE COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY WILL LEAD TO EXPLOSIVE FIRE GROWTH POTENTIAL. IAZ008-009-018-019-MNZ086-087-094-095-111015- /O.CON.KARX.FW.W.0005.120911T1600Z-120912T0200Z/ MITCHELL-HOWARD-FLOYD-CHICKASAW-DODGE-OLMSTED-MOWER-FILLMORE- 908 PM CDT MON SEP 10 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM CDT TUESDAY FOR STRONG WINDS AND LOW RELATIVE HUMIDITY... * AFFECTED AREA...PORTIONS OF SOUTHEAST MINNESOTA AND NORTHEAST IOWA. * WINDS...SOUTH 20 TO 25 MPH WITH GUSTS UP TO 35 MPH. * RELATIVE HUMIDITY...AS LOW AS 23 PERCENT. * TEMPERATURES...AROUND 90. * IMPACTS...FIRES COULD START EASILY AND SPREAD QUICKLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ RIECK
706 WWUS83 KARX 110922 RFWARX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 422 AM CDT TUE SEP 11 2012 ...DANGEROUS WEATHER CONDITIONS FOR WILDFIRES LATE THIS MORNING THROUGH THIS EVENING... .DRY CONDITIONS ALONG WITH SOUTH WINDS OF 20 TO 25 MPH...GUSTING TO 30 TO 40 MPH...WILL RESULT IN DANGEROUS WEATHER CONDITIONS FOR WILDFIRES. TEMPERATURES WILL CLIMB TO AROUND 90 DURING THE AFTERNOON HOURS WITH RELATIVE HUMIDITY VALUES FALLING TO 20 TO 25 PERCENT. THE COMBINATION OF STRONG WINDS AND LOW RELATIVE HUMIDITY WILL LEAD TO EXPLOSIVE FIRE GROWTH POTENTIAL. IAZ008-009-018-019-MNZ086-087-094-095-111730- /O.CON.KARX.FW.W.0005.120911T1600Z-120912T0200Z/ MITCHELL-HOWARD-FLOYD-CHICKASAW-DODGE-OLMSTED-MOWER-FILLMORE- 422 AM CDT TUE SEP 11 2012 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 9 PM CDT THIS EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY... * AFFECTED AREA...PORTIONS OF SOUTHEAST MINNESOTA AND NORTHEAST IOWA. * WINDS...SOUTH 20 TO 25 MPH WITH GUSTS OF 30 TO 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 22 PERCENT. * TEMPERATURES...AROUND 90. * IMPACTS...FIRES COULD START EASILY AND SPREAD QUICKLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ AJ
767 WWUS83 KARX 111601 RFWARX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 1101 AM CDT TUE SEP 11 2012 ...RED FLAG WARNING FOR DANGEROUS WEATHER CONDITIONS LEADING TO THE POTENTIAL OF EXPLOSIVE FIRE GROWTH AND WILDFIRES THROUGH THIS EVENING... .SOUTH WINDS OF 20 TO 30 MPH...GUSTING AT TIMES TO 40 MPH WILL COMBINE WITH VERY LOW RELATIVE HUMIDITY READINGS IN THE 20 TO 25 PERCENT RANGE INTO THIS EVENING. THIS COMBINATION ALONG WITH ALREADY DRY VEGETATION WILL LEAD TO THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH AND WILDFIRES. LOOK FOR CONDITIONS TO GRADUALLY IMPROVE AFTER SUNSET AS WINDS SUBSIDE AND AS THE RELATIVE HUMIDITY RECOVERS. IAZ008-009-018-019-MNZ086-087-094-095-120015- /O.CON.KARX.FW.W.0005.000000T0000Z-120912T0200Z/ MITCHELL-HOWARD-FLOYD-CHICKASAW-DODGE-OLMSTED-MOWER-FILLMORE- 1101 AM CDT TUE SEP 11 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING FOR STRONG WINDS AND VERY LOW RELATIVE HUMIDITY... * AFFECTED AREA...PORTIONS OF SOUTHEAST MINNESOTA AND NORTHEAST IOWA. * WINDS...SOUTH 20 TO 30 MPH WITH GUSTS APPROACHING 40 MPH. * RELATIVE HUMIDITY...AS LOW AS 20 TO 25 PERCENT. * TEMPERATURES...AROUND 90. * IMPACTS...FIRES COULD START EASILY AND SPREAD QUICKLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ DAS
368 WWUS83 KARX 112028 RFWARX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 328 PM CDT TUE SEP 11 2012 ...RED FLAG WARNING CONTINUES UNTIL 9 PM THIS EVENING... .SOUTH WINDS OF 20 TO 30 MPH...GUSTING AT TIMES TO 40 MPH COMBINING WITH VERY LOW RELATIVE HUMIDITY READINGS IN THE 20 TO 25 PERCENT RANGE WILL CONTINUE INTO THIS EVENING. THE STRONG WINDS AND VERY LOW RELATIVE HUMIDITY ALONG WITH ALREADY DRY VEGETATION WILL LEAD TO THE POTENTIAL FOR EXPLOSIVE FIRE GROWTH AND WILDFIRES. LOOK FOR CONDITIONS TO GRADUALLY IMPROVE AFTER SUNSET AS WINDS SUBSIDE AND AS THE RELATIVE HUMIDITY RECOVERS. IAZ008-009-018-019-MNZ086-087-094-095-120200- /O.CON.KARX.FW.W.0005.000000T0000Z-120912T0200Z/ MITCHELL-HOWARD-FLOYD-CHICKASAW-DODGE-OLMSTED-MOWER-FILLMORE- 328 PM CDT TUE SEP 11 2012 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM CDT THIS EVENING FOR STRONG WINDS AND VERY LOW RELATIVE HUMIDITY... * AREAS AFFECTED BY THIS RED FLAG WARNING INCLUDE PORTIONS OF SOUTHEAST MINNESOTA AND NORTHEAST IOWA. * WINDS WILL BE FROM THE SOUTH 20 TO 30 MPH WITH GUSTS NEAR 40 MPH AT TIMES LATE THIS AFTERNOON...SUBSIDING TO 15 TO 25 MPH BY 9 PM. * LOOK FOR RELATIVE HUMIDITY LEVELS IN THE 20 TO 25 PERCENT RANGE LATE THIS AFTERNOON...RECOVERING TO 35 TO 40 PERCENT BY 9 PM. * PLAN ON HIGH TEMPERATURES NEAR 90 LATE THIS AFTERNOON...LOWERING INTO THE MIDDLE 70S BY 9 PM. * IMPACTS...FIRES COULD START EASILY AND SPREAD QUICKLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ DAS
883 WWUS83 KARX 120148 RFWARX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE LA CROSSE WI 848 PM CDT TUE SEP 11 2012 ...CONDITIONS IMPROVING THIS EVENING... .WITH THE LOSS OF DAYLIGHT...THE CRITICAL FIRE WEATHER CONDITIONS HAVE BEEN IMPROVING. THE WINDS HAVE DECREASED TO LESS THAN 20 MPH AND THE RELATIVE HUMIDITY HAS BEEN INCREASING. LOOK FOR THESE TRENDS TO CONTINUE THROUGH THE REMAINDER OF THE EVENING AND THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 9 PM. IAZ008-009-018-019-MNZ086-087-094-095-120300- /O.EXP.KARX.FW.W.0005.000000T0000Z-120912T0200Z/ MITCHELL-HOWARD-FLOYD-CHICKASAW-DODGE-OLMSTED-MOWER-FILLMORE- 848 PM CDT TUE SEP 11 2012 ...RED FLAG WARNING WILL EXPIRE AT 9 PM CDT THIS EVENING FOR STRONG WINDS AND VERY LOW RELATIVE HUMIDITY... THE SOUTH WINDS HAVE DECREASED TO LESS THAN 20 MPH AND THE RELATIVE HUMIDITY WILL CONTINUE TO INCREASE. THIS HAS EASED THE THREAT FOR RAPIDLY SPREADING FIRES AND THE RED FLAG WARNING WILL BE ALLOWED TO EXPIRE AT 9 PM. $$ 04
Nearby
Red Flag Warnings in Minnesota, 2012Red Flag Warnings in Iowa, 2012Every red flag warning 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.