Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 21, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at Feb 1, 2012, 3:22 PM CST for Columbia County, Union County, Arkansas. It was in force for 32 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Feb 1, 2012, 3:22 PM CST (21:22 UTC)
- Expired
- Feb 1, 2012, 3:54 PM CST
- In force
- 32 min
- Issued by
- NWS Shreveport, LA
- Area
- Storm-based polygon
Counties Columbia County, AR, Union County, AR
The radar
The Shreveport radar (KSHV), 127 km from the middle of the area, began a volume at 21:24 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Feb 1, 3:41 PM CST | HAIL 1 | 3 W Smackover, AR | SMACKOVER POLICE DEPARTMENT REPORTED QUARTER-SIZED HAIL ON WEST SIDE OF THE CITY OF SMACKOVER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 1, 12:37 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 9.4 hours before the alert went out and 119 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
- 302 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 86 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
The text
As transmitted, in the capitals the NWS used until 2016.
619 WUUS54 KSHV 012122 SVRSHV ARC027-139-012215- /O.NEW.KSHV.SV.W.0021.120201T2122Z-120201T2215Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 322 PM CST WED FEB 1 2012 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN UNION COUNTY IN SOUTH CENTRAL ARKANSAS... THIS INCLUDES THE CITY OF SMACKOVER... EAST CENTRAL COLUMBIA COUNTY IN SOUTHWEST ARKANSAS... * UNTIL 415 PM CST * AT 320 PM CST...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 8 MILES WEST OF VILLAGE...OR NEAR MCNEIL...AND MOVING EAST AT 25 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MOUNT HOLLY AND LISBON... PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 3323 9272 3323 9321 3338 9321 3337 9272 TIME...MOT...LOC 2122Z 267DEG 23KT 3331 9317 $$ 23
2 follow-up statements
969 WWUS54 KSHV 012145 SVSSHV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 345 PM CST WED FEB 1 2012 ARC027-012155- /O.CAN.KSHV.SV.W.0021.000000T0000Z-120201T2215Z/ COLUMBIA AR- 345 PM CST WED FEB 1 2012 ...THE SEVERE THUNDERSTORM WARNING FOR COLUMBIA COUNTY IS CANCELLED... LAT...LON 3327 9272 3328 9294 3338 9294 3337 9272 TIME...MOT...LOC 2145Z 270DEG 14KT 3334 9281 $$ ARC139-012215- /O.CON.KSHV.SV.W.0021.000000T0000Z-120201T2215Z/ UNION AR- 345 PM CST WED FEB 1 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CST FOR UNION COUNTY... AT 341 PM CST...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 6 MILES WEST OF SMACKOVER...MOVING EAST AT 15 MPH. THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 3327 9272 3328 9294 3338 9294 3337 9272 TIME...MOT...LOC 2145Z 270DEG 14KT 3334 9281 $$ 23
587 WWUS54 KSHV 012154 SVSSHV SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SHREVEPORT LA 354 PM CST WED FEB 1 2012 ARC139-012204- /O.CAN.KSHV.SV.W.0021.000000T0000Z-120201T2215Z/ UNION AR- 354 PM CST WED FEB 1 2012 ...THE SEVERE THUNDERSTORM WARNING FOR UNION COUNTY IS CANCELLED... LAT...LON 3327 9272 3328 9294 3338 9294 3337 9272 TIME...MOT...LOC 2154Z 270DEG 14KT 3334 9277 $$ 23
The office that day
Everything else NWS Shreveport, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 1, 12:56 PM CST | Severe Thunderstorm Warning | SHV | Sevier | 34 min |
| Feb 1, 1:26 PM CST | Severe Thunderstorm Warning | SHV | Howard, Sevier | 34 min |
| Feb 1, 1:52 PM CST | Severe Thunderstorm Warning | SHV | Hempstead, Lafayette, Miller | 37 min |
| Feb 1, 2:24 PM CST | Severe Thunderstorm Warning | SHV | Columbia, Lafayette, Miller | 66 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.