Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 34, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 9, 2012, 7:45 PM CDT for Osage County, Oklahoma. It was in force for 60 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
- Apr 9, 2012, 7:45 PM CDT (00:45 UTC)
- Expired
- Apr 9, 2012, 8:45 PM CDT
- In force
- 60 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
County Osage County, OK
The radar
The Tulsa radar (KINX), 100 km from the middle of the area, began a volume at 00:46 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 9, 8:08 PM CDT | HAIL 1 | 9 Nnw Bigheart, OK | MARBLE TO QUARTER SIZE HAIL COVERING THE GROUND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 0.8 hours before the alert went out and 124 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
- 944 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 945 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 211 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.0
The text
As transmitted, in the capitals the NWS used until 2016.
352 WUUS54 KTSA 100045 SVRTSA OKC113-100145- /O.NEW.KTSA.SV.W.0034.120410T0045Z-120410T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 745 PM CDT MON APR 9 2012 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA * UNTIL 845 PM CDT * AT 742 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 19 MILES NORTHWEST OF BIGHEART...MOVING SOUTHEAST AT 25 MPH. STORM HAZARDS INCLUDE... QUARTER SIZE HAIL... WIND GUSTS TO 60 MPH... * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BIGHEART AND HULAH. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM THAT IS LIKELY PRODUCING DAMAGING HAIL. IF NO UNDERGROUND SHELTER IS AVAILABLE TAKE COVER ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. && LAT...LON 3699 9600 3672 9609 3700 9656 3701 9608 TIME...MOT...LOC 0045Z 303DEG 21KT 3704 9643 $$
2 follow-up statements
650 WWUS54 KTSA 100057 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 757 PM CDT MON APR 9 2012 OKC113-100145- /O.CON.KTSA.SV.W.0034.000000T0000Z-120410T0145Z/ OSAGE OK- 757 PM CDT MON APR 9 2012 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR NORTHEASTERN OSAGE COUNTY... AT 755 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 13 MILES NORTHWEST OF BIGHEART...MOVING SOUTHEAST AT 25 MPH. STORM HAZARDS INCLUDE... HALF DOLLAR SIZE HAIL... WIND GUSTS TO 60 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE... BIGHEART...WAH SHA SHE STATE PARK AND HULAH. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM THAT IS LIKELY PRODUCING DAMAGING HAIL. IF NO UNDERGROUND SHELTER IS AVAILABLE TAKE COVER ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS. && LAT...LON 3700 9656 3701 9608 3699 9600 3672 9609 TIME...MOT...LOC 0057Z 309DEG 21KT 3699 9637 $$
822
WWUS54 KTSA 100115
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
815 PM CDT MON APR 9 2012
OKC113-100145-
/O.CON.KTSA.SV.W.0034.000000T0000Z-120410T0145Z/
OSAGE OK-
815 PM CDT MON APR 9 2012
...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
NORTHEASTERN OSAGE COUNTY...
AT 813 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BIGHEART...
MOVING SOUTHEAST AT 25 MPH.
STORM HAZARDS INCLUDE...
HALF DOLLAR SIZE HAIL...
WIND GUSTS TO 60 MPH...
SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
BIGHEART...WAH SHA SHE STATE PARK AND HULAH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM THAT IS LIKELY PRODUCING DAMAGING HAIL. IF
NO UNDERGROUND SHELTER IS AVAILABLE TAKE COVER ON THE LOWEST FLOOR IN
AN INTERIOR ROOM AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 3691 9641 3695 9638 3699 9632 3701 9608
3699 9600 3672 9609
TIME...MOT...LOC 0115Z 314DEG 23KT 3688 9627
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 8:22 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 53 min |
| Apr 9, 8:51 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 54 min |
| Apr 9, 9:03 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata | 57 min |
| Apr 9, 9:04 PM CDT | Severe Thunderstorm Warning | TSA | Osage, Rogers, Washington | 41 min |
| Apr 9, 9:30 PM CDT | Severe Thunderstorm Warning | TSA | Rogers, Tulsa, Washington | 45 min |
| Apr 9, 9:41 PM CDT | Special Weather Statement | TSA | Osage | 49 min |
| Apr 9, 9:56 PM CDT | Special Weather Statement | TSA | Ottawa | 49 min |
Nearby
Severe 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.