Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 115, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at May 7, 2012, 8:38 PM CDT for 4 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
- May 7, 2012, 8:38 PM CDT (01:38 UTC)
- Expired
- May 7, 2012, 9:20 PM CDT
- In force
- 42 min
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
Counties Bradley County, AR, Calhoun County, AR, Cleveland County, AR, Dallas County, AR
The radar
The Little Rock radar (KLZK), 124 km from the middle of the area, began a volume at 01:41 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 7, 5:21 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 00:00Z, 1.6 hours before the alert went out and 188 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
- 891 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 1717 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 May 7, 7:04 PM CDT, 1 hour 34 minutes earlier.
Area forecast discussion, May 7, 7:04 PM CDT, 1 hour 34 minutes before
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</html>Hazardous weather outlook, May 7, 11:22 AM CDT, 9 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LITTLE ROCK AR 1122 AM CDT MON MAY 7 2012 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-081000- 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- 1122 AM CDT MON MAY 7 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING...ACROSS AREAS ALONG AND SOUTH OF A LINE FROM MENA...TO DUMAS. INSTABILITY IS EXPECTED TO BE MAXIMIZED THIS AFTERNOON IN THE SLIGHT RISK AREA. ANY THUNDERSTORMS THAT REACH SEVERE LIMITS WILL BE CAPABLE OF LARGE HAIL...BRIEF...BUT INTENSE WIND GUSTS...AND VERY HEAVY RAINFALL. THE OVERALL SEVERE THREAT WILL GRADUALLY DIMINISH AFTER SUNSET. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS WILL BE POSSIBLE ACROSS EXTREME SOUTHERN ARKANSAS ON TUESDAY. THESE THUNDERSTORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED...ACROSS THE SLIGHT RISK AREA...MAINLY BETWEEN 3 PM AND 9 PM MONDAY. && VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND CLICK ON CENTRAL ARKANSAS. 55
In the hours before
Special weather statement, May 7, 5:06 PM CDT, 3 hours 32 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LITTLE ROCK AR 506 PM CDT MON MAY 7 2012 ARZ053-062-072250- CLARK AR-DALLAS AR- 506 PM CDT MON MAY 7 2012 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN DALLAS AND EASTERN CLARK COUNTIES UNTIL 545 PM CDT... AT 501 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 4 MILES EAST OF POSEYVILLE...OR 14 MILES SOUTHEAST OF ARKADELPHIA...MOVING EAST AT 15 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM. * LOCATIONS IMPACTED INCLUDE... MANNING... DALARK... WAVE... POSEYVILLE... GRAVEL JUNCTION... 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 3406 9264 3386 9271 3398 9297 3409 9293 TIME...MOT...LOC 2206Z 285DEG 12KT 3401 9285 44
Local storm report, May 7, 5:45 PM CDT, 2 hours 53 minutes before
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</html>Special weather statement, May 7, 6:47 PM CDT, 1 hour 51 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 |
|---|---|---|---|---|
| May 7, 7:16 PM CDT | Severe Thunderstorm Warning | LZK | Ouachita | 25 min |
| May 7, 9:15 PM CDT | Special Weather Statement | LZK | Lincoln | 45 min |
| May 7, 9:30 PM CDT | Special Weather Statement | LZK | Cleveland | 45 min |
| May 7, 10:05 PM CDT | Special Weather Statement | LZK | Jefferson | 45 min |
| May 7, 10:13 PM CDT | Severe Thunderstorm Warning | LZK | Jefferson, Lonoke | 16 min |
| May 7, 11:14 PM CDT | Special Weather Statement | LZK | Arkansas, Jefferson, Lincoln | 41 min |
| May 7, 11:55 PM CDT | Special Weather Statement | LZK | Drew, Lincoln | 45 min |
| May 8, 6:26 AM CDT | River Flood Warning | LZK | Jackson, Woodruff | 8 days |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2012Every severe thunderstorm warning in 2012
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.