Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 29, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 3, 2012, 6:44 PM CDT for Crawford County, Sebastian County, Arkansas; LeFlore County, Sequoyah County, Oklahoma. It was in force for 46 min. 5 reports 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
- Apr 3, 2012, 6:44 PM CDT (23:44 UTC)
- Expired
- Apr 3, 2012, 7:30 PM CDT
- In force
- 46 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Crawford County, AR, Sebastian County, AR, LeFlore County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 13 km from the middle of the area, began a volume at 23:46 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 |
|---|---|---|---|
| Apr 3, 7:04 PM CDT | TSTM WND DMG | Arkoma, OK | SMALL TREES DOWN IN ARKOMA. TIME ESTIMATED. |
| Apr 3, 7:04 PM CDT | TSTM WND GST 60 | Arkoma, OK | TIME ESTIMATED. |
| Apr 3, 7:18 PM CDT | TSTM WND DMG | Fort Smith, AR | TRANSFORMER BLOWN, NUMEROUS POWER POLES AND LINES DOWN. |
| Apr 3, 7:24 PM CDT | TSTM WND GST 60 | Fort Smith, AR | HWY 540 AND FREE FERRY RD. |
| Apr 3, 7:24 PM CDT | HAIL 1 | Fort Smith, AR | HWY 540 AND FREE FERRY RD. |
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 |
|---|---|---|---|
| Apr 3, 3:43 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 11.7 hours before the alert went out and 183 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
- 7 J/kg
- Mixed-layer CIN
- -92 J/kg
- Mixed-layer LCL
- 803 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -81 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
494 WUUS54 KTSA 032344 SVRTSA ARC033-131-OKC079-135-040030- /O.NEW.KTSA.SV.W.0029.120403T2344Z-120404T0030Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 644 PM CDT TUE APR 3 2012 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN SEQUOYAH COUNTY IN EAST CENTRAL OKLAHOMA SOUTHWESTERN CRAWFORD COUNTY IN NORTHWEST ARKANSAS NORTHEASTERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA NORTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS * UNTIL 730 PM CDT * AT 641 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 3 MILES NORTH OF PANAMA...MOVING NORTHEAST AT 40 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... WIND GUSTS TO 60 MPH... * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...SPIRO... POCOLA...BONANZA...ROLAND...ARKOMA...JENNY LIND...MOFFETT...FORT SMITH...BARLING...VAN BUREN AND LAVACA. THIS INCLUDES INTERSTATE 40 IN OKLAHOMA BETWEEN MILE MARKERS 318 AND 328. THIS INCLUDES INTERSTATE 40 IN ARKANSAS BETWEEN MILE MARKERS 0 AND 7. PRECAUTIONARY/PREPAREDNESS ACTIONS... PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. && LAT...LON 3555 9442 3533 9412 3509 9467 3524 9481 TIME...MOT...LOC 2344Z 231DEG 35KT 3522 9464 $$
1 follow-up statement
886 WWUS54 KTSA 040014 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 714 PM CDT TUE APR 3 2012 ARC033-131-OKC079-135-040030- /O.CON.KTSA.SV.W.0029.000000T0000Z-120404T0030Z/ CRAWFORD AR-SEBASTIAN AR-LE FLORE OK-SEQUOYAH OK- 714 PM CDT TUE APR 3 2012 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR SOUTHEASTERN SEQUOYAH...NORTHEASTERN LE FLORE...NORTHERN SEBASTIAN AND SOUTHWESTERN CRAWFORD COUNTIES... AT 709 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR FORT SMITH... MOVING NORTHEAST AT 40 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... WIND GUSTS TO 60 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...CENTRAL CITY...VAN BUREN...SHIBLEY AND LAVACA. THIS INCLUDES INTERSTATE 40 IN OKLAHOMA BETWEEN MILE MARKERS 319 AND 328. THIS INCLUDES INTERSTATE 40 IN ARKANSAS BETWEEN MILE MARKERS 0 AND 7. PRECAUTIONARY/PREPAREDNESS ACTIONS... PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. TORNADOES CAN DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. TAKE COVER ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. && LAT...LON 3517 9449 3531 9472 3555 9442 3533 9412 TIME...MOT...LOC 0014Z 231DEG 35KT 3540 9436 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 7:00 AM CDT | Special Weather Statement | TSA | Pittsburg | 60 min |
| Apr 3, 7:27 AM CDT | Special Weather Statement | TSA | Pittsburg | 63 min |
| Apr 3, 8:00 AM CDT | Areal Flood Advisory | TSA | Haskell, Latimer, Pittsburg, Pushmataha | 60 min |
| Apr 3, 9:04 AM CDT | Areal Flood Advisory | TSA | Haskell, Latimer, LeFlore, Pushmataha | 116 min |
| Apr 3, 4:01 PM CDT | Special Weather Statement | TSA | Pittsburg | 44 min |
| Apr 3, 4:50 PM CDT | Special Weather Statement | TSA | Pittsburg | 40 min |
| Apr 3, 5:33 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer | 42 min |
| Apr 3, 6:09 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, Latimer, LeFlore | 36 min |
| Apr 3, 6:24 PM CDT | Special Weather Statement | TSA | Haskell | 51 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 2012Severe Thunderstorm Warnings in Oklahoma, 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.