Alert archive / Iowa / Red Flag Warnings in 2011
Red Flag Warning 2, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this red flag warning at May 1, 2011, 11:25 AM CDT. It took effect at May 1, 2011, 12:00 PM CDT. It was in force for 7 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
- May 1, 2011, 11:25 AM CDT (16:25 UTC)
- In effect from
- May 1, 2011, 12:00 PM CDT
- Expired
- May 1, 2011, 7:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Sioux Falls, SD
The text
As transmitted, in the capitals the NWS used until 2016.
113 WWUS83 KFSD 011625 RFWFSD URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SIOUX FALLS SD 1125 AM CDT SUN MAY 1 2011 ...RED FLAG WARNING THIS AFTERNOON AND VERY EARLY EVENING FOR STRONG WINDS AND LOW HUMIDITY VALUES...FOR THE JAMES RIVER VALLEY SOUTHWARD INTO THE SIOUX CITY VICINITY... .NORTHWEST WINDS WILL AVERAGE 25 TO 40 MPH THROUGH MID AFTERNOON WITH A FEW HIGHER GUSTS...AND THEN START TO NOTCH DOWN IN THE LATE AFTERNOON AND EARLY EVENING. MINIMUM RELATIVE HUMIDITY VALUES WILL ALSO LIKELY AVERAGE ABOUT 20 TO 25 PERCENT THROUGH THE AFTERNOON. IAZ300-NEZ249-020000- /O.NEW.KFSD.FW.W.0002.110501T1700Z-110502T0000Z/ NORTHERN LOESS HILLS AND FLOYD RIVER BASIN- EXTREME NORTHEAST NEBRASKA- 1125 AM CDT SUN MAY 1 2011 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 249 AND 300... THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. * AFFECTED AREA...IN IOWA...FIRE WEATHER ZONE 300 NORTHERN LOESS HILLS AND FLOYD RIVER BASIN. IN NEBRASKA...FIRE WEATHER ZONE 249 EXTREME NORTHEAST NEBRASKA. * WIND...NORTHWEST WINDS WILL AVERAGE 25 TO 40 MPH WITH A FEW HIGHER GUSTS THROUGH MID AFTERNOON...AND THEN WILL BEGIN TO FINALLY SUBSIDE INTO EARLY EVENING. * HUMIDITY...MINIMUM HUMIDITY VALUES WILL LIKELY LOWER INTO THE 18 TO 23 PERCENT RANGE THIS AFTERNOON. * IMPACTS...UNDER THESE CONDITIONS...FIRE RATE OF SPREAD IN DORMANT GRASSES WILL BE EXTREMELY FAST. DEBRIS BURNING SHOULD NOT BE PERFORMED TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ SDZ256-258-020000- /O.NEW.KFSD.FW.W.0002.110501T1900Z-110502T0000Z/ MIDDLE JAMES RIVER VALLEY- LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY- 1125 AM CDT SUN MAY 1 2011 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 256 AND 258... THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. * AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONE 256 MIDDLE JAMES RIVER VALLEY...FIRE WEATHER ZONE 258 LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY. * WIND...NORTHWEST WINDS WILL AVERAGE 25 TO 40 MPH WITH A FEW HIGHER GUSTS THROUGH MID AFTERNOON...AND THEN WILL BEGIN TO FINALLY SUBSIDE INTO EARLY EVENING. * HUMIDITY...MINIMUM HUMIDITY VALUES WILL LIKELY LOWER INTO THE 20 TO 25 PERCENT RANGE THIS AFTERNOON. * IMPACTS...UNDER THESE CONDITIONS...FIRE RATE OF SPREAD IN DORMANT GRASSES WILL BE EXTREMELY FAST. DEBRIS BURNING SHOULD NOT BE PERFORMED TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/SIOUXFALLS
2 follow-up statements
992 WWUS83 KFSD 011747 RFWFSD URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SIOUX FALLS SD 1247 PM CDT SUN MAY 1 2011 ...RED FLAG WARNING THIS AFTERNOON AND VERY EARLY EVENING FOR STRONG WINDS AND LOW HUMIDITY VALUES...FOR THE MIDDLE AND LOWER JAMES RIVER VALLEY...MIDDLE AND LOWER BIG SIOUX RIVER VALLEY... SOUTHEAST SOUTH DAKOTA...EXTREME NORTHEAST NEBRASKA AND NORTHWEST IOWA... .NORTHWEST WINDS WILL AVERAGE 25 TO 40 MPH THROUGH MID AFTERNOON WITH A FEW HIGHER GUSTS...AND THEN START TO NOTCH DOWN IN THE LATE AFTERNOON AND EARLY EVENING. MINIMUM RELATIVE HUMIDITY VALUES WILL ALSO LIKELY AVERAGE ABOUT 20 TO 25 PERCENT THROUGH THE AFTERNOON...WITH VALUES A BIT LOWER AROUND THE SIOUX CITY VICINITY. IAZ301-SDZ257-020000- /O.EXA.KFSD.FW.W.0002.110501T1900Z-110502T0000Z/ IOWA GREAT LAKES/ROCK AND LITTLE SIOUX BASINS- MIDDLE BIG SIOUX RIVER VALLEY- 1247 PM CDT SUN MAY 1 2011 ...RED FLAG WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 257 AND 301... THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 7 PM CDT THIS EVENING. * AFFECTED AREA...IN IOWA...FIRE WEATHER ZONE 301 IOWA GREAT LAKES/ROCK AND LITTLE SIOUX BASINS. IN SOUTH DAKOTA...FIRE WEATHER ZONE 257 MIDDLE BIG SIOUX RIVER VALLEY. * WIND...NORTHWEST WINDS WILL AVERAGE 25 TO 40 MPH WITH A FEW HIGHER GUSTS THROUGH MID AFTERNOON...AND THEN WILL BEGIN TO FINALLY SUBSIDE INTO EARLY EVENING. * HUMIDITY...MINIMUM HUMIDITY VALUES WILL LIKELY LOWER INTO THE 20 TO 25 PERCENT RANGE THIS AFTERNOON. * IMPACTS...UNDER THESE CONDITIONS...FIRE RATE OF SPREAD IN DORMANT GRASSES WILL BE EXTREMELY FAST. DEBRIS BURNING SHOULD NOT BE PERFORMED TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ IAZ300-NEZ249-020000- /O.CON.KFSD.FW.W.0002.000000T0000Z-110502T0000Z/ NORTHERN LOESS HILLS AND FLOYD RIVER BASIN- EXTREME NORTHEAST NEBRASKA- 1247 PM CDT SUN MAY 1 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 249 AND 300... * AFFECTED AREA...IN IOWA...FIRE WEATHER ZONE 300 NORTHERN LOESS HILLS AND FLOYD RIVER BASIN. IN NEBRASKA...FIRE WEATHER ZONE 249 EXTREME NORTHEAST NEBRASKA. * WIND...NORTHWEST WINDS WILL AVERAGE 25 TO 40 MPH WITH A FEW HIGHER GUSTS THROUGH MID AFTERNOON...AND THEN WILL BEGIN TO FINALLY SUBSIDE INTO EARLY EVENING. * HUMIDITY...MINIMUM HUMIDITY VALUES WILL LIKELY LOWER INTO THE 15 TO 20 PERCENT RANGE THIS AFTERNOON. * IMPACTS...UNDER THESE CONDITIONS...FIRE RATE OF SPREAD IN DORMANT GRASSES WILL BE EXTREMELY FAST. DEBRIS BURNING SHOULD NOT BE PERFORMED TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ SDZ256-258-020000- /O.CON.KFSD.FW.W.0002.110501T1900Z-110502T0000Z/ MIDDLE JAMES RIVER VALLEY- LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY- 1247 PM CDT SUN MAY 1 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 256 AND 258... * AFFECTED AREA...IN SOUTH DAKOTA...FIRE WEATHER ZONE 256 MIDDLE JAMES RIVER VALLEY...FIRE WEATHER ZONE 258 LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY. * WIND...NORTHWEST WINDS WILL AVERAGE 25 TO 40 MPH WITH A FEW HIGHER GUSTS THROUGH MID AFTERNOON...AND THEN WILL BEGIN TO FINALLY SUBSIDE INTO EARLY EVENING. * HUMIDITY...MINIMUM HUMIDITY VALUES WILL LIKELY LOWER INTO THE 20 TO 25 PERCENT RANGE THIS AFTERNOON. * IMPACTS...UNDER THESE CONDITIONS...FIRE RATE OF SPREAD IN DORMANT GRASSES WILL BE EXTREMELY FAST. DEBRIS BURNING SHOULD NOT BE PERFORMED TODAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR IN THE NEAR FUTURE. A COMBINATION OF STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL. && $$ HTTP://WEATHER.GOV/SIOUXFALLS
105 WWUS83 KFSD 012358 RFWFSD URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE SIOUX FALLS SD 658 PM CDT SUN MAY 1 2011 IAZ300-NEZ249-020100- /O.EXP.KFSD.FW.W.0002.000000T0000Z-110502T0000Z/ NORTHERN LOESS HILLS AND FLOYD RIVER BASIN- EXTREME NORTHEAST NEBRASKA- 658 PM CDT SUN MAY 1 2011 ...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 249 AND 300... THE RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING. WIND SPEEDS WILL DECREASE AND RELATIVE HUMIDITY VALUES WILL RISE THROUGH THE EVENING. $$ SDZ256-258-020100- /O.EXP.KFSD.FW.W.0002.000000T0000Z-110502T0000Z/ MIDDLE JAMES RIVER VALLEY- LOWER JAMES RIVER TO LOWER BIG SIOUX RIVER VALLEY- 658 PM CDT SUN MAY 1 2011 ...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 256 AND 258... THE RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING. WIND SPEEDS WILL DECREASE AND RELATIVE HUMIDITY VALUES WILL RISE THROUGH THE EVENING. $$ IAZ301-SDZ257-020100- /O.EXP.KFSD.FW.W.0002.000000T0000Z-110502T0000Z/ IOWA GREAT LAKES/ROCK AND LITTLE SIOUX BASINS- MIDDLE BIG SIOUX RIVER VALLEY- 658 PM CDT SUN MAY 1 2011 ...RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 257 AND 301... THE RED FLAG WARNING WILL EXPIRE AT 7 PM CDT THIS EVENING. WIND SPEEDS WILL DECREASE AND RELATIVE HUMIDITY VALUES WILL RISE THROUGH THE EVENING. $$ HTTP://WEATHER.GOV/SIOUXFALLS
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 3:55 AM CDT | Wind Advisory | FSD | Buena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more | 13 hr |
Nearby
Red Flag Warnings in Iowa, 2011Red Flag Warnings in Nebraska, 2011Red Flag Warnings in South Dakota, 2011Every red flag 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.