Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 191, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Apr 23, 2011, 3:33 PM CDT for Marion County, Arkansas. It was in force for 14 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
- Apr 23, 2011, 3:33 PM CDT (20:33 UTC)
- Expired
- Apr 23, 2011, 3:47 PM CDT
- In force
- 14 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
County Marion County, AR
The radar
The Springfield radar (KSGF), 125 km from the middle of the area, began a volume at 20:33 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
Springfield, MO (KSGF), launched 12:00Z, 8.6 hours before the alert went out and 122 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
- 1105 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 185 m²/s²
- 0-3 km storm-relative helicity
- 514 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
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 Apr 23, 3:00 PM CDT, 33 minutes earlier.
Area forecast discussion, Apr 23, 3:00 PM CDT, 33 minutes before
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</html>Hazardous weather outlook, Apr 23, 2:56 PM CDT, 37 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE LITTLE ROCK AR 256 PM CDT SAT APR 23 2011 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-241000- 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- 256 PM CDT SAT APR 23 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT ACROSS PORTIONS OF CENTRAL AND NORTHWEST ARKANSAS. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS MAINLY THE NORTHWEST TWO THIRDS OF ARKANSAS. THE MAIN THREATS TO BE EXPECTED WOULD BE LARGE HAIL AND DAMAGING WINDS. HEAVY RAINFALL IS ALSO POSSIBLE...WITH COULD LEAD TO FLASH FLOODING. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SMALL RAIN CHANCES ARE EXPECTED FOR SUNDAY CENTRAL AND SOUTH...BUT WILL BE LIKELY IN THE NORTH AND NORTHWEST. SHOWERS AND THUNDERSTORMS ARE EXPECTED MONDAY THROUGH WEDNESDAY AS A SLOW MOVING COLD FRONT MOVES THROUGH OKLAHOMA AND ARKANSAS. THIS COULD BRING SIGNIFICANT AND WIDESPREAD STRONG TO SEVERE THUNDERSTORMS TO THE STATE. THIS SCENARIO BEARS MONITORING OVER THE NEXT SEVERAL DAYS. WITH SEVERAL ROUNDS OF SHOWERS AND THUNDERSTORMS EXPECTED ACROSS PORTIONS OF THE STATE OVER THE NEXT SEVERAL DAYS...THE THREAT FOR FLASH FLOODING AND RIVER FLOODING WILL INCREASE OVER TIME. A FLASH FLOOD WATCH IS IN EFFECT FROM THIS MORNING THROUGH MONDAY MORNING. THE AREAS WITH THE GREATEST THREAT FOR HEAVY RAINFALL OVER THE NEXT SEVERAL DAYS WILL BE ACROSS THE NORTHERN THIRD OF THE STATE NEAR A FRONTAL BOUNDARY LINGERING IN THE VICINITY OF THE OZARKS. .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. 51/62
In the hours before
Special weather statement, Apr 23, 10:16 AM CDT, 5 hours 17 minutes before
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</html>Special weather statement, Apr 23, 2:43 PM CDT, 50 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
243 PM CDT SAT APR 23 2011
ARZ003-004-232030-
BOONE AR-MARION AR-
243 PM CDT SAT APR 23 2011
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MARION AND BOONE
COUNTIES UNTIL 330 PM CDT...
AT 243 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES SOUTHEAST OF GREEN FOREST...MOVING
NORTHEAST AT 45 MPH.
HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.
* LOCATIONS IMPACTED INCLUDE...
HARRISON... WININGTON... WILLIS...
SELF... ROBERSON HOLLOW... RED BANK...
OZARK ISLE... OMAHA... MYRTLE...
LEAD HILL... LAKEWAY... DODD CITY...
DIAMOND CITY... CLARK HILL... CAPPS...
BERGMAN... ZINC... SOUTH LEAD HILL...
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.
LAT...LON 3637 9259 3614 9329 3615 9330 3649 9331
3650 9330 3650 9267
TIME...MOT...LOC 1943Z 244DEG 39KT 3626 9335
62Special weather statement, Apr 23, 3:30 PM CDT, 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 330 PM CDT SAT APR 23 2011 ARZ003-004-232045- BOONE AR-MARION AR- 330 PM CDT SAT APR 23 2011 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MARION AND NORTHEASTERN BOONE COUNTIES UNTIL 345 PM CDT... AT 331 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 3 MILES NORTHEAST OF SUGARLOAF KNOB...OR 18 MILES NORTHWEST OF YELLVILLE...MOVING EAST AT 40 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... WININGTON... PRICE PLACE... LEAD HILL... DIAMOND CITY... SOUTH LEAD HILL... PEEL... TUCKER HOLLOW PARK... SYCAMORE... SUGARLOAF KNOB... SHORT MTN... PILOT KNOB... JONES PT WMA... HWY 125 PARK... BUCK CREEK PARK... LAT...LON 3650 9254 3633 9294 3649 9303 3651 9301 TIME...MOT...LOC 2031Z 249DEG 36KT 3647 9283 57
The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 7:37 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Boone, Marion | 27 min |
| Apr 22, 8:05 PM CDT | Special Weather Statement | LZK | Newton | 30 min |
| Apr 22, 8:37 PM CDT | Severe Thunderstorm Warning | LZK | Johnson, Newton, Pope, Searcy | 23 min |
| Apr 22, 11:28 PM CDT | Special Weather Statement | LZK | Conway, Faulkner, Yell | 42 min |
| Apr 23, 1:20 AM CDT | Special Weather Statement | LZK | Scott | 45 min |
| Apr 23, 1:39 AM CDT | Severe Thunderstorm Warning | LZK | Polk, Scott | 31 min |
| Apr 23, 4:51 AM CDT | Flash Flood Watch | LZK | Baxter, Bradley, Calhoun, Desha, Drew, Fulton and 5 more | 4 days |
| Apr 23, 9:08 AM CDT | Special Weather Statement | LZK | Boone, Marion, Newton | 62 min |
| Apr 23, 9:14 AM CDT | River Flood Warning | LZK | Randolph | 6 days |
| Apr 23, 9:14 AM CDT | River Flood Warning | LZK | Randolph | 39 days |
| Apr 23, 9:14 AM CDT | River Flood Warning | LZK | Independence, Jackson, Lawrence | 45 days |
| Apr 23, 9:25 AM CDT | Special Weather Statement | LZK | Johnson | 45 min |
| Apr 23, 9:56 AM CDT | River Flood Warning | LZK | White, Woodruff | 69 days |
| Apr 23, 10:16 AM CDT | Special Weather Statement | LZK | Baxter, Marion | 44 min |
| Apr 23, 11:07 AM CDT | Special Weather Statement | LZK | Fulton, Sharp | 43 min |
| Apr 23, 11:13 AM CDT | Special Weather Statement | LZK | Boone | 47 min |
| Apr 23, 2:43 PM CDT | Special Weather Statement | LZK | Boone | 47 min |
| Apr 23, 3:04 PM CDT | Severe Thunderstorm Warning | LZK | Boone, Marion | 26 min |
| Apr 23, 3:30 PM CDT | Special Weather Statement | LZK | Marion | 15 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.