Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 42, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 13, 2012, 5:30 PM CDT for Ottawa County, Oklahoma. It was in force for 19 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 13, 2012, 5:30 PM CDT (22:30 UTC)
- Expired
- Apr 13, 2012, 5:49 PM CDT
- In force
- 19 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
County Ottawa County, OK
The radar
The Tulsa radar (KINX), 111 km from the middle of the area, began a volume at 22:32 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 13, 1:28 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 10.5 hours before the alert went out and 84 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 582 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 606 m²/s²
- 0-3 km storm-relative helicity
- 711 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
980
WUUS54 KTSA 132230
SVRTSA
OKC115-132300-
/O.NEW.KTSA.SV.W.0042.120413T2230Z-120413T2300Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
530 PM CDT FRI APR 13 2012
THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHERN OTTAWA COUNTY IN NORTHEAST OKLAHOMA
* UNTIL 600 PM CDT
* AT 527 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 4 MILES EAST OF
MIAMI...MOVING NORTHEAST AT 35 MPH.
STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
WIND GUSTS TO 60 MPH...
* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...PICHER
AND QUAPAW.
THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 307 AND 324.
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 3700 9462 3684 9462 3684 9486 3691 9494
3700 9482
TIME...MOT...LOC 2230Z 234DEG 32KT 3690 9477
$$1 follow-up statement
654
WWUS54 KTSA 132249
SVSTSA
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
549 PM CDT FRI APR 13 2012
OKC115-132259-
/O.CAN.KTSA.SV.W.0042.000000T0000Z-120413T2300Z/
OTTAWA OK-
549 PM CDT FRI APR 13 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN OTTAWA COUNTY IS
CANCELLED...
THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.
LAT...LON 3700 9462 3684 9462 3684 9486 3691 9494
3700 9482
TIME...MOT...LOC 2249Z 234DEG 32KT 3700 9460
$$The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 13, 3:17 PM CDT | Special Weather Statement | TSA | Washington | 28 min |
| Apr 13, 3:45 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata, Washington | 45 min |
| Apr 13, 4:24 PM CDT | Special Weather Statement | TSA | Nowata | 36 min |
| Apr 13, 4:38 PM CDT | Special Weather Statement | TSA | Craig | 37 min |
| Apr 13, 5:05 PM CDT | Special Weather Statement | TSA | Washington | 25 min |
| Apr 13, 5:20 PM CDT | Special Weather Statement | TSA | Pawnee | 25 min |
| Apr 13, 6:01 PM CDT | Special Weather Statement | TSA | Osage | 29 min |
| Apr 13, 6:18 PM CDT | Special Weather Statement | TSA | Creek | 27 min |
| Apr 13, 6:55 PM CDT | Special Weather Statement | TSA | Creek | 35 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.