Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 709, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Jul 24, 2011, 2:51 PM CDT for Polk County, Arkansas. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 24, 2011, 2:51 PM CDT (19:51 UTC)
- Expired
- Jul 24, 2011, 3:15 PM CDT
- In force
- 24 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
County Polk County, AR
The radar
The Western Arkansas radar (KSRX), 90 km from the middle of the area, began a volume at 19:55 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
Shreveport, LA (KSHV), launched 12:00Z, 7.9 hours before the alert went out and 227 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
- 969 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 24, 12:36 PM CDT, 2 hours 15 minutes earlier.
Area forecast discussion, Jul 24, 12:36 PM CDT, 2 hours 15 minutes before
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</html>Hazardous weather outlook, Jul 24, 5:00 AM CDT, 9 hours 51 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LITTLE ROCK AR 500 AM CDT SUN JUL 24 2011 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-251000- ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND- CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING- INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE- MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE- PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE- WOODRUFF-YELL- 500 AM CDT SUN JUL 24 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS. .DAY ONE...TODAY AND TONIGHT A HEAT ADVISORY IS IN EFFECT FOR THE FORECAST AREA TODAY DUE TO CONTINUED HOT AND HUMID CONDITIONS. AFTERNOON HIGH TEMPERATURES WILL BE IN THE UPPER 90S TO AROUND 100...AND HEAT INDEX VALUES OF AROUND 105 DEGREES ARE EXPECTED. ISOLATED TO SCATTERED THUNDERSTORMS WILL AGAIN BE SEEN ACROSS THE STATE TODAY. WHILE WIDESPREAD SEVERE STORMS ARE NOT EXPECTED...A FEW STORMS COULD BECOME SEVERE. DAMAGING WINDS WOULD BE THE GREATEST THREAT FROM ANY STRONG TO SEVERE STORMS TODAY. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE HOT AND HUMID WEATHER CONDITIONS WILL CONTINUE THROUGH AT LEAST WEDNESDAY. DURING THIS TIME AFTERNOON HIGH TEMPERATURES WILL BE IN THE MID TO UPPER 90S...WITH SOME LOCATIONS SEEING HIGHS OVER 100. THIS WILL CREATE DANGEROUS HEAT CONDITIONS...AND AFTERNOON HEAT INDEX VALUES WILL REACH AROUND 105 DEGREES AND ABOVE IN MANY LOCATIONS ACROSS THE STATE EACH DAY. ALSO...ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE...MAINLY IN THE AFTERNOON TO EARLY EVENING HOURS. WHILE WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...SOME STORMS COULD BECOME STRONG TO SEVERE...WITH DAMAGING WINDS THE MAIN THREAT. A SLIGHT BREAK IN THE HEAT MAY BE SEEN BY THE END OF THE WORK WEEK AS THE STRONG UPPER LEVEL RIDGE MOVES EAST. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. && VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND CLICK ON CENTRAL ARKANSAS. 63
In the hours before
Special weather statement, Jul 24, 1:55 PM CDT, 56 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 155 PM CDT SUN JUL 24 2011 ARZ025-033-034-241940- JACKSON AR-WHITE AR-WOODRUFF AR- 155 PM CDT SUN JUL 24 2011 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN WHITE...NORTHWESTERN WOODRUFF AND SOUTHWESTERN JACKSON COUNTIES UNTIL 245 PM CDT... AT 151 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 2 MILES NORTHEAST OF RUSSELL...OR 9 MILES NORTHWEST OF AUGUSTA...MOVING SOUTH AT 5 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. * LOCATIONS IMPACTED INCLUDE... AUGUSTA... RUSSELL... BALD KNOB... WORDEN... VELVET RIDGE... HEFFINGTON... BRADFORD... THREE SISTERS LAKE... THREE PRONG LAKE... TEAGUE LAKE... RUSSELL MTN... RIO VISTA... LONG LAKE... LITTLE JORDAN LAKE... LIBERTY VALLEY... LAKE BALD KNOB... BIG HURRICANE LAKE... BALD KNOB WILDLIFE REFUGE... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY...TURN AROUND DONT DROWN! LAT...LON 3522 9136 3523 9163 3546 9159 3545 9136 TIME...MOT...LOC 1855Z 010DEG 6KT 3537 9148 /44
Special weather statement, Jul 24, 1:57 PM CDT, 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 157 PM CDT SUN JUL 24 2011 ARZ007-016-241945- INDEPENDENCE AR-SHARP AR- 157 PM CDT SUN JUL 24 2011 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN INDEPENDENCE AND SOUTHERN SHARP COUNTIES UNTIL 245 PM CDT... AT 155 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES SOUTH OF CAVE CITY...OR 7 MILES NORTH OF BATESVILLE...MOVING SOUTH AT 10 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. * LOCATIONS IMPACTED INCLUDE... BATESVILLE... SALADO... NEWARK... MOOREFIELD... MAGNESS... CAVE CITY... SULPHUR ROCK... SANDTOWN... PFEIFFER... GAINESBORO... DESHA... CURIA... CHARLOTTE... RAMSEY HILL... MT ZION... MCHUE... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY...TURN AROUND DONT DROWN! LAT...LON 3571 9138 3566 9168 3592 9171 3596 9150 TIME...MOT...LOC 1858Z 347DEG 10KT 3585 9158 /44
Special weather statement, Jul 24, 2:28 PM CDT, 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 228 PM CDT SUN JUL 24 2011 ARZ037-040-242015- POLK AR-SCOTT AR- 228 PM CDT SUN JUL 24 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SCOTT AND NORTHERN POLK COUNTIES UNTIL 315 PM CDT... AT 225 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 4 MILES NORTHEAST OF BLACK FORK MTN...OR 14 MILES NORTHWEST OF MENA...MOVING SOUTHEAST AT 10 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... BEAUCHAMP... EAGLETON... SHILOH... BLACK FORK MTN... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. LAT...LON 3478 9416 3464 9424 3473 9441 3485 9437 TIME...MOT...LOC 1928Z 294DEG 9KT 3476 9432 224
Special weather statement, Jul 24, 2:33 PM CDT, 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 233 PM CDT SUN JUL 24 2011 ARZ032-033-242020- FAULKNER AR-WHITE AR- 233 PM CDT SUN JUL 24 2011 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN WHITE AND EXTREME EASTERN FAULKNER COUNTIES UNTIL 315 PM CDT... AT 229 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 2 MILES EAST OF GIN MTN...OR 14 MILES SOUTH OF HEBER SPRINGS...MOVING SOUTH AT 15 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. * LOCATIONS IMPACTED INCLUDE... GRAVEL HILL... ROMANCE... JOY... FLOYD... EL PASO... RED ROCK MTN... DES ARC MTN... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY...TURN AROUND DONT DROWN! LAT...LON 3514 9183 3508 9209 3528 9213 3532 9193 TIME...MOT...LOC 1934Z 340DEG 14KT 3528 9203 /44
Special weather statement, Jul 24, 2:36 PM CDT, 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
236 PM CDT SUN JUL 24 2011
ARZ040-041-242020-
MONTGOMERY AR-POLK AR-
236 PM CDT SUN JUL 24 2011
...SIGNIFICANT WEATHER ADVISORY FOR EXTREME SOUTHWESTERN MONTGOMERY
AND EASTERN POLK COUNTIES UNTIL 315 PM CDT...
AT 233 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR BUCKEYE MTN...OR 15 MILES SOUTHEAST OF
MENA...MOVING SOUTHEAST AT 5 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.
* LOCATIONS IMPACTED INCLUDE...
SHADY LAKE... RATTLESNAKE MTN... RASPBERRY MTN...
NICHOLS MTN... KATY MTN... HURRICANE KNOB...
EAST HANNA MTN... BUCKEYE MTN... BLAYLOCK MTN...
BARD SPGS REC AREA...
THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 3448 9407 3443 9391 3434 9399 3435 9402
3441 9413
TIME...MOT...LOC 1936Z 296DEG 6KT 3442 9404
224Special weather statement, Jul 24, 2:38 PM CDT, 13 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 238 PM CDT SUN JUL 24 2011 ARZ016-025-242025- INDEPENDENCE AR-JACKSON AR- 238 PM CDT SUN JUL 24 2011 ...SIGNIFICANT WEATHER ADVISORY FOR EASTERN INDEPENDENCE AND NORTHERN JACKSON COUNTIES UNTIL 330 PM CDT... AT 233 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7 MILES SOUTHEAST OF STRAWBERRY...OR 16 MILES NORTH OF DIAZ...MOVING SOUTH AT 10 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. * LOCATIONS IMPACTED INCLUDE... TUCKERMAN... SWIFTON... KENYON... ELGIN... DOWDY... CORD... VANCE... PARSLEY RESERVOIR... BELL LAKE... THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY...TURN AROUND DONT DROWN! LAT...LON 3572 9138 3590 9136 3590 9112 3573 9109 TIME...MOT...LOC 1938Z 001DEG 11KT 3587 9124 /44
The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 7:12 PM CDT | Special Weather Statement | LZK | Garland | 28 min |
| Jul 24, 1:21 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne | 27 min |
| Jul 24, 1:26 PM CDT | Special Weather Statement | LZK | Pike | 44 min |
| Jul 24, 1:33 PM CDT | Severe Thunderstorm Warning | LZK | Clark, Montgomery, Pike | 27 min |
| Jul 24, 1:41 PM CDT | Special Weather Statement | LZK | Van Buren | 44 min |
| Jul 24, 1:52 PM CDT | Special Weather Statement | LZK | White | 48 min |
| Jul 24, 1:55 PM CDT | Special Weather Statement | LZK | White | 45 min |
| Jul 24, 1:57 PM CDT | Special Weather Statement | LZK | Independence | 48 min |
| Jul 24, 2:00 PM CDT | Severe Thunderstorm Warning | LZK | Cleburne, Faulkner, Van Buren, White | 45 min |
| Jul 24, 2:16 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Jackson | 28 min |
| Jul 24, 2:28 PM CDT | Special Weather Statement | LZK | Scott | 47 min |
| Jul 24, 2:33 PM CDT | Special Weather Statement | LZK | White | 47 min |
| Jul 24, 2:36 PM CDT | Special Weather Statement | LZK | Polk | 44 min |
| Jul 24, 2:38 PM CDT | Special Weather Statement | LZK | Jackson | 47 min |
| Jul 24, 3:06 PM CDT | Severe Thunderstorm Warning | LZK | Clark, Ouachita | 24 min |
| Jul 24, 3:14 PM CDT | Special Weather Statement | LZK | Polk | 31 min |
| Jul 24, 3:26 PM CDT | Severe Thunderstorm Warning | LZK | Clark | 38 min |
| Jul 24, 3:49 PM CDT | Special Weather Statement | LZK | Ouachita | 46 min |
| Jul 24, 3:50 PM CDT | Special Weather Statement | LZK | Polk | 45 min |
| Jul 24, 3:56 PM CDT | Severe Thunderstorm Warning | LZK | Ouachita | 34 min |
| Jul 24, 4:11 PM CDT | Severe Thunderstorm Warning | LZK | Ouachita | 19 min |
| Jul 24, 4:29 PM CDT | Severe Thunderstorm Warning | LZK | Ouachita | 31 min |
| Jul 24, 4:30 PM CDT | Special Weather Statement | LZK | Ouachita | 30 min |
| Jul 24, 4:40 PM CDT | Severe Thunderstorm Warning | LZK | Dallas | 35 min |
| Jul 24, 4:58 PM CDT | Special Weather Statement | LZK | Ouachita | 32 min |
| Jul 24, 5:01 PM CDT | Severe Thunderstorm Warning | LZK | Dallas | 14 min |
| Jul 24, 5:15 PM CDT | Special Weather Statement | LZK | Dallas | 30 min |
| Jul 24, 6:31 PM CDT | Special Weather Statement | LZK | Lincoln | 29 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2011Every severe thunderstorm 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.