Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 25, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Mar 8, 2011, 9:03 PM CST for 5 counties in Arkansas. It was in force for 42 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
- Mar 8, 2011, 9:03 PM CST (03:03 UTC)
- Expired
- Mar 8, 2011, 9:45 PM CST
- In force
- 42 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
Counties Clark County, AR, Garland County, AR, Grant County, AR, Hot Spring County, AR, Saline County, AR
The radar
The Little Rock radar (KLZK), 76 km from the middle of the area, began a volume at 03:03 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 00:00Z, 3.1 hours before the alert went out and 226 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
- 2021 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 557 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 261 m²/s²
- 0-3 km storm-relative helicity
- 247 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 12.7
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 Mar 8, 5:30 PM CST, 3 hours 33 minutes earlier.
Area forecast discussion, Mar 8, 5:30 PM CST, 3 hours 33 minutes before
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HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE LITTLE ROCK AR 1025 AM CST TUE MAR 8 2011 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-091100- 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- 1025 AM CST TUE MAR 8 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS. .DAY ONE...THIS AFTERNOON AND TONIGHT A STORM SYSTEM WILL APPROACH ARKANSAS FROM THE SOUTHERN PLAINS THIS AFTERNOON AND TONIGHT. AHEAD OF THE SYSTEM...SHOWERS AND SCATTERED THUNDERSTORMS WILL CONTINUE DEVELOPING...AND SOME STORMS COULD BE SEVERE. AS OF LATE THIS MORNING...TEMPERATURES ACROSS THE REGION WERE ONLY IN THE 40S TO LOWER 50S. WARMTH AND MOISTURE WAS TRYING TO INCREASE FROM THE GULF COAST...BUT WAS HAVING SOME DIFFICULTY. THROUGH THIS AFTERNOON...WARMTH AND MOISTURE WILL TEND TO RIDE OVER COOLER CONDITIONS IN ARKANSAS...WITH PRECIPITATION FORMING ABOVE THE COOL LAYER. MEANWHILE...THERE WILL BE FAIRLY DRY AIR ALOFT. MOISTURE WILL SURGE INTO THIS DRY AIR MASS...WITH SOME EVAPORATION OCCURRING. THIS WILL CREATE COOLING...AND WILL MAKE IT EASIER FOR HAIL TO FORM. SOME OF THE HAIL COULD BE QUARTER SIZE OR LARGER. HEADING INTO TONIGHT...THE CONCERN FOR LARGE HAIL WILL CONTINUE IN NORTHERN AND CENTRAL ARKANSAS. STORMS IN THESE AREAS WILL REMAIN ELEVATED...OR ABOVE COOL AIR NEAR THE GROUND. ACROSS THE SOUTH...SOME WARMING IS EXPECTED. STORMS WILL BE LESS ELEVATED... MAKING IT EASIER FOR STRONG TO DAMAGING WINDS TO MAKE IT TO THE GROUND. AT THIS POINT...IT APPEARS SIGNIFICANT WARMING WILL BE CONFINED TO ABOUT THE SOUTHERN TWO ROWS OF COUNTIES. IN ADDITION TO A CONCERN FOR DAMAGING WINDS ACROSS THE FAR SOUTH...WINDS WILL TURN WITH HEIGHT. THIS WILL MAKE IT POSSIBLE FOR ISOLATED TORNADOES. WARMING IS MORE OF A GUARANTEE ALONG THE GULF COAST...WITH DAMAGING WINDS AND TORNADOES MORE LIKELY FROM LOUISIANA INTO MISSISSIPPI. OTHER THAN SEVERE WEATHER...THERE WILL BE AREAS OF HEAVY RAIN...ESPECIALLY IN THE EASTERN HALF OF THE STATE. FROM LITTLE ROCK EASTWARD...RAINFALL TOTALS COULD REACH ONE TO TWO INCHES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THE SYSTEM IN THE SOUTHERN PLAINS WILL DRAG A COLD FRONT THROUGH THE REGION. THE FRONT WILL BE EAST OF THE FORECAST AREA BY WEDNESDAY MORNING. IT WILL BE BREEZY AND COOLER AS HIGH PRESSURE BUILDS BEHIND THE FRONT. THE NEXT CHANCE OF PRECIPITATION WILL NOT OCCUR UNTIL SUNDAY NIGHT AND MONDAY WHEN ANOTHER STORM SYSTEM APPROACHES. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON INTO THE OVERNIGHT HOURS. && VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND CLICK ON CENTRAL ARKANSAS. 56/46
In the hours before
Special weather statement, Mar 8, 4:25 PM CST, 4 hours 38 minutes before
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</html>The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 6:12 PM CST | Special Weather Statement | LZK | Independence | 43 min |
| Mar 8, 6:12 PM CST | Severe Thunderstorm Warning | LZK | Newton, Pope, Searcy | 33 min |
| Mar 8, 6:15 PM CST | Special Weather Statement | LZK | Prairie | 45 min |
| Mar 8, 6:36 PM CST | Special Weather Statement | LZK | Pope | 44 min |
| Mar 8, 7:04 PM CST | Special Weather Statement | LZK | Woodruff | 46 min |
| Mar 8, 7:11 PM CST | Special Weather Statement | LZK | Independence | 29 min |
| Mar 8, 7:14 PM CST | Special Weather Statement | LZK | Searcy | 41 min |
| Mar 8, 7:47 PM CST | Special Weather Statement | LZK | Montgomery, Pike | 58 min |
| Mar 8, 8:50 PM CST | Special Weather Statement | LZK | Clark, Hot Spring | 60 min |
| Mar 8, 9:35 PM CST | Severe Thunderstorm Warning | LZK | Pulaski, Saline | 31 min |
| Mar 8, 10:01 PM CST | Special Weather Statement | LZK | Calhoun | 44 min |
| Mar 9, 3:28 AM CST | Lake Wind Advisory | LZK | Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more | 15 hr |
| Mar 9, 10:50 AM CST | River Flood Advisory | LZK | Independence, Jackson, Lawrence | 3 days |
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.