Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 113, NWS Memphis, TN
NWS Memphis, TN issued this severe thunderstorm warning at Apr 15, 2011, 2:44 PM CDT for 4 counties in Arkansas. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 15, 2011, 2:44 PM CDT (19:44 UTC)
- Expired
- Apr 15, 2011, 3:30 PM CDT
- In force
- 46 min
- Issued by
- NWS Memphis, TN
- Area
- Storm-based polygon
Counties Clay County, AR, Greene County, AR, Lawrence County, AR, Randolph County, AR
The radar
The Memphis radar (KNQA), 133 km from the middle of the area, began a volume at 19:43 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 |
|---|---|---|---|
| Apr 15, 2:09 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 7.7 hours before the alert went out and 177 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
- 41 J/kg
- Mixed-layer CIN
- -230 J/kg
- Mixed-layer LCL
- 565 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
530 WUUS54 KMEG 151944 SVRMEG ARC021-055-075-121-152030- /O.NEW.KMEG.SV.W.0113.110415T1944Z-110415T2030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MEMPHIS TN 244 PM CDT FRI APR 15 2011 THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN CLAY COUNTY IN EASTERN ARKANSAS... NORTHWESTERN GREENE COUNTY IN EASTERN ARKANSAS... EAST CENTRAL LAWRENCE COUNTY IN EASTERN ARKANSAS... EASTERN RANDOLPH COUNTY IN EASTERN ARKANSAS... * UNTIL 330 PM CDT * AT 244 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR COLLEGE CITY...OR NEAR POCAHONTAS...AND MOVING NORTHEAST AT 55 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CORNING AND POCAHONTAS. PRECAUTIONARY/PREPAREDNESS ACTIONS... .A TORNADO WATCH REMAINS IN EFFECT FOR PORTIONS OF THE WARNED AREA. IF A TORNADO IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A STORM SHELTER OR SMALL INTERIOR ROOM. .STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION. TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5. && LAT...LON 3604 9087 3617 9111 3650 9093 3651 9036 TIME...MOT...LOC 1944Z 220DEG 50KT 3620 9093 $$ RRH/TLSJR
3 follow-up statements
685 WWUS54 KMEG 152000 SVSMEG SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 300 PM CDT FRI APR 15 2011 ARC021-055-075-121-152030- /O.CON.KMEG.SV.W.0113.000000T0000Z-110415T2030Z/ CLAY AR-RANDOLPH AR-GREENE AR-LAWRENCE AR- 300 PM CDT FRI APR 15 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR EAST CENTRAL LAWRENCE...NORTHWESTERN GREENE...EASTERN RANDOLPH AND WESTERN CLAY COUNTIES... AT 259 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR BIGGERS...OR 10 MILES EAST OF POCAHONTAS...MOVING NORTHEAST AT 45 MPH. IN ADDITION DOPPLER RADAR INDICATES THAT A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL NEAR 2 MILE NORTHEAST OF WALNUT RIDGE...MOVING NORTHEAST AT 45 MPH. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CORNING... POCAHONTAS...PITMAN...MIDDLEBROOK...ELKINS PARK...STOKES... BROCKETT...ENGELERG...SHARUM...FENDER...LESTERVILLE...ELNORA...MANSON AND SHANNON. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A STORM SHELTER OR SMALL INTERIOR ROOM. .STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION. TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5. && LAT...LON 3604 9087 3617 9111 3650 9093 3651 9036 TIME...MOT...LOC 1959Z 227DEG 41KT 3630 9078 $$ RRH/TLSJR
554 WWUS54 KMEG 152017 SVSMEG SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 317 PM CDT FRI APR 15 2011 ARC075-152026- /O.CAN.KMEG.SV.W.0113.000000T0000Z-110415T2030Z/ LAWRENCE AR- 317 PM CDT FRI APR 15 2011 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LAWRENCE COUNTY IS CANCELLED... AT 316 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE ORIGINAL SEVERE THUNDERSTORM WARNING IS CANCELLED. LAT...LON 3617 9074 3620 9091 3650 9080 3651 9036 TIME...MOT...LOC 2016Z 214DEG 54KT 3631 9073 $$ ARC021-055-121-152030- /O.CON.KMEG.SV.W.0113.000000T0000Z-110415T2030Z/ CLAY AR-RANDOLPH AR-GREENE AR- 317 PM CDT FRI APR 15 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM CDT FOR NORTHWESTERN GREENE...EASTERN RANDOLPH AND WESTERN CLAY COUNTIES... AT 316 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR CASE...OR 11 MILES EAST OF POCAHONTAS...MOVING NORTHEAST AT 60 MPH. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CORNING... PALATKA...HEELSTRING...BROOKINGS...CASE AND TWIN OAKS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A STORM SHELTER OR SMALL INTERIOR ROOM. .STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION. TO REPORT SEVERE WEATHER ONLY...CALL 1 800 4 3 2 0 8 7 5. && LAT...LON 3617 9074 3620 9091 3650 9080 3651 9036 TIME...MOT...LOC 2016Z 214DEG 54KT 3631 9073 $$ RRH/TLSJR
769 WWUS54 KMEG 152029 SVSMEG SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 329 PM CDT FRI APR 15 2011 ARC021-055-121-152038- /O.EXP.KMEG.SV.W.0113.000000T0000Z-110415T2030Z/ CLAY AR-RANDOLPH AR-GREENE AR- 329 PM CDT FRI APR 15 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GREENE...EASTERN RANDOLPH AND WESTERN CLAY COUNTIES WILL EXPIRE AT 330 PM CDT... AT 328 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...THE SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE. THE STORMS MAY PRODUCE DIME SIZE HAIL. A TORNADO WATCH IS IN EFFECT UNTIL 9 PM FOR THE AREA. LAT...LON 3617 9074 3620 9091 3650 9080 3651 9036 TIME...MOT...LOC 2028Z 214DEG 54KT 3646 9060 $$ RRH/TLSJR
The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 2:07 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Poinsett | 23 min |
| Apr 15, 2:56 AM CDT | Severe Thunderstorm Warning | MEG | Lee, Phillips, St. Francis | 79 min |
| Apr 15, 2:58 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Crittenden, Cross, Greene, Lawrence, Poinsett | 77 min |
| Apr 15, 3:56 AM CDT | Severe Thunderstorm Warning | MEG | Crittenden | 79 min |
| Apr 15, 4:00 AM CDT | Severe Thunderstorm Warning | MEG | Craighead, Mississippi, Poinsett | 60 min |
| Apr 15, 4:14 AM CDT | Severe Thunderstorm Warning | MEG | Lee, Phillips, St. Francis | 31 min |
| Apr 15, 4:39 AM CDT | Severe Thunderstorm Warning | MEG | Phillips | 66 min |
| Apr 15, 3:43 PM CDT | Severe Thunderstorm Warning | MEG | Clay, Greene | 47 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.