Alert archive / Texas / Red Flag Warnings in 2011
Red Flag Warning 9, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this red flag warning at Apr 9, 2011, 9:09 PM CDT for 4 counties in Texas. It took effect at Apr 10, 2011, 6:00 PM CDT. It was in force for 21 hr. 6 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 9, 2011, 9:09 PM CDT (02:09 UTC)
- In effect from
- Apr 10, 2011, 6:00 PM CDT
- Expired
- Apr 11, 2011, 3:26 PM CDT
- In force
- 21 hr
- Issued by
- NWS Austin/San Antonio, TX
Counties Edwards County, TX, Kinney County, TX, Maverick County, TX, Val Verde County, TX
The radar
The Laughlin AFB radar (KDFX), 36 km from the middle of the area, began a volume at 02:13 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 10, 11:25 PM CDT | HAIL 0.5 | 12 Ne Juno, TX | PEA TO MARBLE SIZE HAIL. |
| Apr 10, 11:30 PM CDT | HAIL 0.75 | 11 Nnw Rocksprings, TX | |
| Apr 10, 11:48 PM CDT | HAIL 0.5 | 1 N Rocksprings, TX | PEA TO MARBLE HAIL AND WINDS 35 TO 45 MPH GUSTS. |
| Apr 10, 11:50 PM CDT | HAIL 0.5 | 2 N Rocksprings, TX | PEA TO MARBLE SIZE HAIL. |
| Apr 10, 11:53 PM CDT | HAIL 0.5 | 3 E Rocksprings, TX | PEA TO MARBLE SIZE HAIL AND WIND GUSTS TO 45 MPH. |
| Apr 11, 12:32 AM CDT | HAIL 0.7 | 8 Sw Rocksprings, TX | DIME SIZE HAIL. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 2.2 hours before the alert went out and 31 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
- 543 J/kg
- Mixed-layer CIN
- -404 J/kg
- Mixed-layer LCL
- 3061 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
423 WWUS84 KEWX 100209 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 909 PM CDT SAT APR 9 2011 ...A RED FLAG WARNING IS IN EFFECT FROM 6 PM CDT THROUGH 11 PM CDT SUNDAY ACROSS THE WESTERN PORTION OF THE EDWARDS PLATEAU AND RIO GRANDE VALLEY DUE TO A DRY COLD FRONTAL PASSAGE... .A PACIFIC LOW PRESSURE SYSTEM WILL BRING A MOSTLY DRY COLD FRONT THROUGH SOUTH CENTRAL TEXAS SUNDAY NIGHT. THERE WILL BE A SLIGHT CHANCE FOR RAIN GENERALLY ALONG AND EAST OF HIGHWAY 281. AREAS ALONG AND WEST OF A ROCKSPRINGS TO BRACKETTVILLE TO EAGLE PASS LINE WILL RECEIVE LITTLE TO NO RAINFALL BEFORE A BREEZY AND DRY AIRMASS FILTERS IN. WHILE THE THE DRY AIRMASS WILL BE ENTRENCHED ACROSS THE AREA INTO MONDAY...BREEZY CONDITIONS ARE EXPECTED TO DIMINISH OVERNIGHT BEFORE INTENSIFYING DURING THE EARLY AFTERNOON HOURS. TXZ183-184-202-217-101415- /O.UPG.KEWX.FW.A.0005.110410T2300Z-110411T0400Z/ /O.NEW.KEWX.FW.W.0009.110410T2300Z-110411T0400Z/ VAL VERDE-EDWARDS-KINNEY-MAVERICK- 909 PM CDT SAT APR 9 2011 ...RED FLAG WARNING IN EFFECT FROM 6 PM TO 11 PM CDT SUNDAY... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 6 PM TO 11 PM CDT SUNDAY. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. EXPECT NORTHWEST 20-FOOT LEVEL WINDS OF 15 TO 20 MPH BEHIND A DRY COLD FRONT CONTINUING INTO THE LATE EVENING ON SUNDAY FOR THE WESTERN PORTION OF THE EDWARDS PLATEAU AND RIO GRANDE VALLEY. AFTERNOON RELATIVE HUMIDITY VALUES ARE EXPECTED TO DIP INTO THE TEENS ACROSS MUCH OF VAL VERDE COUNTY AND THE WESTERN PORTION OF EDWARDS COUNTY...WITH LOW 20S ACROSS THE REMAINDER OF THE RIO GRANDE VALLEY. WINDS ARE EXPECTED TO DROP BELOW CRITICAL VALUES AROUND MIDNIGHT WHILE RELATIVE HUMIDITIES REBOUND ONLY SLIGHTLY OVERNIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
4 follow-up statements
233 WWUS84 KEWX 101046 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 546 AM CDT SUN APR 10 2011 ...A RED FLAG WARNING IS IN EFFECT FROM 6 PM CDT THROUGH 11 PM CDT TODAY ACROSS THE WESTERN PORTION OF THE EDWARDS PLATEAU AND RIO GRANDE VALLEY DUE TO A DRY COLD FRONTAL PASSAGE... .A PACIFIC LOW PRESSURE SYSTEM WILL BRING A MOSTLY DRY COLD FRONT THROUGH SOUTH CENTRAL TEXAS TONIGHT. THERE WILL BE A CHANCE FOR SHOWERS AND THUNDERSTORMS GENERALLY ALONG AND EAST OF HIGHWAY 281. AREAS ALONG AND WEST OF A ROCKSPRINGS TO BRACKETTVILLE TO EAGLE PASS LINE WILL RECEIVE LITTLE TO NO RAINFALL. TXZ183-184-202-217-102300- /O.CON.KEWX.FW.W.0009.110410T2300Z-110411T0400Z/ VAL VERDE-EDWARDS-KINNEY-MAVERICK- 546 AM CDT SUN APR 10 2011 ...RED FLAG WARNING REMAINS IN EFFECT FROM 6 PM TO 11 PM CDT THIS EVENING... EXPECT NORTHWEST 20-FOOT WINDS OF 15 TO 20 MPH THIS EVENING BEHIND A DRY COLD FRONT. AFTERNOON RELATIVE HUMIDITIES ARE EXPECTED TO FALL INTO THE TEENS ACROSS MUCH OF VAL VERDE COUNTY AND THE WESTERN PORTION OF EDWARDS COUNTY...WITH LOW TO MID 20S ACROSS THE REMAINDER OF THE RIO GRANDE VALLEY. WINDS ARE EXPECTED TO DROP BELOW CRITICAL VALUES AROUND MIDNIGHT WHILE RELATIVE HUMIDITIES REBOUND ONLY SLIGHTLY OVERNIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
721 WWUS84 KEWX 102011 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 311 PM CDT SUN APR 10 2011 ...A RED FLAG WARNING IS IN EFFECT TONIGHT AND MONDAY ACROSS ALL OF SOUTH CENTRAL TEXAS DUE TO A DRY COLD FRONT... .A PACIFIC LOW PRESSURE SYSTEM WILL BRING A MOSTLY DRY COLD FRONT THROUGH SOUTH CENTRAL TEXAS TONIGHT. ISOLATED SHOWERS AND COULD FORM ALONG AND AHEAD OF THE COLD FRONT AS IT MOVES THROUGH CENTRAL AND EASTERN PARTS OF SOUTH CENTRAL TEXAS...WITH VERY FEW AREAS EXPECTED TO RECEIVE A WETTING RAIN. CRITICAL FIRE WEATHER CONDITIONS BEHIND THE FRONT ARE EXPECTED TO LAST SEVERAL HOURS... WITH THE WINDS FINALLY EXPECTED TO RELAX LATE IN THE DAY MONDAY. TXZ171>173-185>194-203>209-218>225-228-110700- /O.NEW.KEWX.FW.W.0010.110411T0700Z-110412T0100Z/ LLANO-BURNET-WILLIAMSON-REAL-KERR-BANDERA-GILLESPIE-KENDALL- BLANCO-HAYS-TRAVIS-BASTROP-LEE-UVALDE-MEDINA-BEXAR-COMAL- GUADALUPE-CALDWELL-FAYETTE-ZAVALA-FRIO-ATASCOSA-WILSON-KARNES- GONZALES-DE WITT-LAVACA-DIMMIT- 311 PM CDT SUN APR 10 2011 ...RED FLAG WARNING IN EFFECT FROM 2 AM TO 8 PM CDT MONDAY ACROSS CENTRAL AND EASTERN PORTIONS OF SOUTH CENTRAL TEXAS DUE TO A DRY COLD FRONT... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 2 AM TO 8 PM CDT MONDAY. A COLD FRONT THAT WILL MOVE THROUGH THE AREA DURING THE EARLY TO MID MORNING HOURS WILL BRING WINDY AND VERY DRY CONDITIONS INTO SOUTH CENTRAL TEXAS. EXPECT CRITICAL FIRE WEATHER CONDITIONS TO REACH THE WESTERN HILL COUNTRY AND ADJACENT AREAS OF THE RIO GRANDE PLAINS BETWEEN 2 AM AND 5 AM CDT...AND ACROSS THE REST OF SOUTH CENTRAL TEXAS BETWEEN 4 AM AND 9 AM CDT. RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 20 PERCENT RANGE PRIOR TO DAYBREAK...AND THEN INTO THE 6 TO 15 PERCENT RANGE DURING THE DAY MONDAY. 20-FOOT LEVEL WINDS WILL BLOW FROM THE NORTHWEST AT 15 TO 20 MPH WITH SOME GUSTS TO 30 MPH. WINDS ARE EXPECTED TO DIMINISH FROM WEST TO EAST LATE MONDAY AFTERNOON INTO EARLY MONDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$ TXZ183-184-202-217-110700- /O.EXT.KEWX.FW.W.0009.110410T2300Z-110411T2100Z/ VAL VERDE-EDWARDS-KINNEY-MAVERICK- 311 PM CDT SUN APR 10 2011 ...RED FLAG WARNING NOW IN EFFECT FROM 6 PM THIS EVENING TO 4 PM CDT MONDAY ACROSS WESTERN PORTIONS OF SOUTH CENTRAL TEXAS DUE TO A DRY COLD FRONT... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 8 PM CDT MONDAY. A COLD FRONT THAT WILL MOVE THROUGH THE AREA DURING THE EARLY TO MID MORNING HOURS WILL BRING WINDY AND VERY DRY CONDITIONS INTO SOUTH CENTRAL TEXAS. EXPECT CRITICAL FIRE WEATHER CONDITIONS TO REACH THE VAL VERDE COUNTY AS EARLY AS 6 PM...AND ADJACENT PORTIONS OF THE WESTERN HILL COUNTRY AND THE RIO GRANDE PLAINS BETWEEN 9 PM AND 2 AM CDT. RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 20 PERCENT RANGE OVERNIGHT...AND THEN INTO THE 5 TO 15 PERCENT RANGE DURING THE DAY MONDAY. 20-FOOT LEVEL WINDS WILL BLOW FROM THE NORTHWEST AT 15 TO 20 MPH WITH SOME GUSTS TO 30 MPH. WINDS ARE EXPECTED TO DIMINISH FROM WEST TO EAST BY LATE MONDAY AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
736 WWUS84 KEWX 110820 AAA RFWEWX URGENT - FIRE WEATHER MESSAGE...UPDATED NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 320 AM CDT MON APR 11 2011 ...A RED FLAG WARNING IS IN EFFECT ACROSS ALL OF SOUTH CENTRAL TEXAS DUE CRITICAL FIRE WEATHER CONDITIONS EXPECTED BEHIND A DRY PACIFIC COLD FRONT... .A DRY PACIFIC COLD FRONT WILL PUSH THROUGH SOUTH CENTRAL TEXAS EARLY THIS MORNING. CRITICAL FIRE WEATHER CONDITIONS ARE FORECAST BEHIND THE FRONT AND ARE EXPECTED CONTINUE MOST OF THE DAY...WITH THE WINDS FINALLY RELAXING LATE IN THE AFTERNOON OR EARLY EVENING HOURS. TXZ171>173-185>194-203>209-218>225-228-112030- /O.CON.KEWX.FW.W.0010.000000T0000Z-110412T0100Z/ LLANO-BURNET-WILLIAMSON-REAL-KERR-BANDERA-GILLESPIE-KENDALL- BLANCO-HAYS-TRAVIS-BASTROP-LEE-UVALDE-MEDINA-BEXAR-COMAL- GUADALUPE-CALDWELL-FAYETTE-ZAVALA-FRIO-ATASCOSA-WILSON-KARNES- GONZALES-DE WITT-LAVACA-DIMMIT- 320 AM CDT MON APR 11 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT THIS EVENING... A DRY PACIFIC COLD FRONT THAT WILL MOVE THROUGH THE AREA EARLY THIS MORNING WILL BRING WINDY AND VERY DRY CONDITIONS INTO SOUTH CENTRAL TEXAS. EXPECT CRITICAL FIRE WEATHER CONDITIONS TO REACH THE WESTERN HILL COUNTRY AND ADJACENT AREAS OF THE RIO GRANDE PLAINS BETWEEN 5 AM AND 7 AM CDT...AND ACROSS THE REST OF SOUTH CENTRAL TEXAS BETWEEN 7 AM AND 10 AM CDT. RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 20 PERCENT RANGE PRIOR TO NOON...AND THEN INTO THE 5 TO 15 PERCENT RANGE DURING THE AFTERNOON HOURS. 20-FOOT LEVEL WINDS WILL BLOW FROM THE NORTH AND NORTHWEST AT 15 TO 20 MPH WITH SOME GUSTS TO NEAR 30 MPH. WINDS ARE EXPECTED TO DIMINISH FROM WEST TO EAST LATE MONDAY AFTERNOON INTO EARLY MONDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$ TXZ183-184-202-217-112030- /O.CON.KEWX.FW.W.0009.000000T0000Z-110411T2100Z/ VAL VERDE-EDWARDS-KINNEY-MAVERICK- 320 AM CDT MON APR 11 2011 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON... A COLD FRONT THAT WILL MOVE THROUGH THE AREA DURING THE EARLY TO MID MORNING HOURS WILL BRING WINDY AND VERY DRY CONDITIONS INTO SOUTH CENTRAL TEXAS. EXPECT CRITICAL FIRE WEATHER CONDITIONS TO REACH THE VAL VERDE COUNTY AS EARLY AS 6 PM...AND ADJACENT PORTIONS OF THE WESTERN HILL COUNTRY AND THE RIO GRANDE PLAINS BETWEEN 9 PM AND 2 AM CDT. RELATIVE HUMIDITIES WILL FALL INTO THE 10 TO 20 PERCENT RANGE OVERNIGHT...AND THEN INTO THE 5 TO 15 PERCENT RANGE DURING THE DAY MONDAY. 20-FOOT LEVEL WINDS WILL BLOW FROM THE NORTHWEST AT 15 TO 20 MPH WITH SOME GUSTS TO 30 MPH. WINDS ARE EXPECTED TO DIMINISH FROM WEST TO EAST BY LATE MONDAY AFTERNOON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$
418 WWUS84 KEWX 112026 RFWEWX URGENT - FIRE WEATHER MESSAGE NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 326 PM CDT MON APR 11 2011 ...RED FLAG WARNING HAS BEEN CANCELLED FOR VAL VERDE...EDWARDS... KINNEY AND MAVERICK COUNTIES... ...RED FLAG WARNING CONTINUES THROUGH 8 PM FOR BREEZY AND DRY CONDITIONS ACROSS CENTRAL AND EASTERN PORTIONS OF SOUTH CENTRAL TEXAS... .GUSTY WINDS FROM A SURFACE HIGH PRESSURE RIDGE WILL RELAX FROM WEST TO EAST LATE THIS AFTERNOON AND EARLY THIS EVENING. THE AIR MASS OVER SOUTH CENTRAL TEXAS WILL REMAIN VERY DRY...AND BREEZY CONDITIONS WILL AGAIN BE POSSIBLE OVER THE SOUTHERN EDWARDS PLATEAU TUESDAY AFTERNOON...MAKING FOR ELEVATED TO NEAR CRITICAL FIRE WEATHER CONDITIONS. MOISTURE RECOVERY IS EXPECTED TO BE GOOD TUESDAY NIGHT. TXZ171>173-185>194-203>209-218>225-228-120100- /O.CAN.KEWX.FW.W.0010.000000T0000Z-110412T0100Z/ /O.NEW.KEWX.FW.W.0011.110411T2100Z-110412T0100Z/ LLANO-BURNET-WILLIAMSON-REAL-KERR-BANDERA-GILLESPIE-KENDALL- BLANCO-HAYS-TRAVIS-BASTROP-LEE-UVALDE-MEDINA-BEXAR-COMAL- GUADALUPE-CALDWELL-FAYETTE-ZAVALA-FRIO-ATASCOSA-WILSON-KARNES- GONZALES-DE WITT-LAVACA-DIMMIT- 326 PM CDT MON APR 11 2011 ...RED FLAG WARNING IN EFFECT UNTIL 8 PM CDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A RED FLAG WARNING...WHICH IS IN EFFECT UNTIL 8 PM CDT THIS EVENING. EXPECT RELATIVE HUMIDITIES IN THE 5 TO 15 PERCENT RANGE LATE THIS AFTERNOON...IMPROVING ONLY SLIGHTLY THIS EVENING. 20-FOOT LEVEL WINDS OF 15 TO 20 MPH WILL GUST TO NEAR 30 MPH THROUGH AROUND 6 PM...WITH WINDS DECREASING FROM WEST TO EAST DURING THE EARLY EVENING HOURS. DRY AIR WILL REMAIN OVER THE REGION THROUGH TUESDAY EVENING...AND MORE BREEZY AND DRY CONDITIONS ARE FORECAST FOR WESTERN PARTS OF SOUTH CENTRAL TEXAS LATE TUESDAY AFTERNOON AND EARLY TUESDAY EVENING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A RED FLAG WARNING MEANS WEATHER CONDITIONS WILL PROMOTE FIRES THAT ARE DIFFICULT TO CONTROL ACROSS THE WARNED AREA. A RED FLAG WARNING IS COMPLETELY SEPARATE FROM A LOCAL BURN BAN WHICH IS ISSUED BY LOCAL OFFICIALS. && $$ TXZ183-184-202-217-112130- /O.CAN.KEWX.FW.W.0009.000000T0000Z-110411T2100Z/ VAL VERDE-EDWARDS-KINNEY-MAVERICK- 326 PM CDT MON APR 11 2011 ...RED FLAG WARNING IS CANCELLED FOR WESTERN PORTIONS OF SOUTH CENTRAL TEXAS... THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS CANCELLED THE RED FLAG WARNING. EXPECT WINDS OVER THE WESTERN COUNTIES OF SOUTH CENTRAL TEXAS TO CONTINUE TO DIMINISH THIS AFTERNOON AND THIS EVENING. HOWEVER... VERY DRY AIR WILL REMAIN IN PLACE THROUGH AT LEAST TUESDAY EVENING. $$
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 11:21 AM CDT | Wind Advisory | EWX | Atascosa, Bastrop, Bexar, Blanco, Burnet, Caldwell and 12 more | 10 hr |
| Apr 10, 3:11 PM CDT | Red Flag Warning | EWX | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 23 more | 24 hr |
Nearby
Red Flag Warnings in Texas, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.