Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 177, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Aug 4, 2012, 6:06 PM CDT for Craig County, Nowata County, Oklahoma. It was in force for 26 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
- Aug 4, 2012, 6:06 PM CDT (23:06 UTC)
- Expired
- Aug 4, 2012, 6:32 PM CDT
- In force
- 26 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
Counties Craig County, OK, Nowata County, OK
The radar
The Tulsa radar (KINX), 83 km from the middle of the area, began a volume at 23:08 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 |
|---|---|---|---|
| Aug 4, 6:15 PM CDT | TSTM WND DMG | 8 W Hollow, OK | TREE DAMAGE. LARGE LIMBS BROKEN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 11.1 hours before the alert went out and 131 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
- 917 J/kg
- Mixed-layer CIN
- -319 J/kg
- Mixed-layer LCL
- 1875 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
478 WUUS54 KTSA 042306 SVRTSA OKC035-105-050000- /O.NEW.KTSA.SV.W.0177.120804T2306Z-120805T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 606 PM CDT SAT AUG 4 2012 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN CRAIG COUNTY IN NORTHEAST OKLAHOMA EASTERN NOWATA COUNTY IN NORTHEAST OKLAHOMA * UNTIL 700 PM CDT * AT 604 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 10 MILES WEST OF HOLLOW...MOVING EAST AT 20 MPH. STORM HAZARDS INCLUDE... PENNY SIZE HAIL... DAMAGING WIND GUSTS TO 70 MPH... * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...HOLLOW. 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 3684 9513 3684 9547 3691 9548 3701 9517 TIME...MOT...LOC 2306Z 252DEG 15KT 3688 9544 $$
2 follow-up statements
717 WWUS54 KTSA 042323 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 623 PM CDT SAT AUG 4 2012 OKC105-042333- /O.CAN.KTSA.SV.W.0177.000000T0000Z-120805T0000Z/ NOWATA OK- 623 PM CDT SAT AUG 4 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EASTERN NOWATA COUNTY IS CANCELLED... THE THUNDERSTORM HAS MOVED EAST. LAT...LON 3684 9540 3692 9541 3701 9517 3684 9513 TIME...MOT...LOC 2323Z 254DEG 21KT 3690 9533 $$ OKC035-050000- /O.CON.KTSA.SV.W.0177.000000T0000Z-120805T0000Z/ CRAIG OK- 623 PM CDT SAT AUG 4 2012 ...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR NORTHWESTERN CRAIG COUNTY... AT 621 PM CDT...A LARGE SEVERE THUNDERSTORM WAS LOCATED NEAR HOLLOW...MOVING EAST AT 25 MPH. STORM HAZARDS INCLUDE... WIND GUSTS TO 60 MPH... SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...HOLLOW. 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 3684 9540 3692 9541 3701 9517 3684 9513 TIME...MOT...LOC 2323Z 254DEG 21KT 3690 9533 $$
302 WWUS54 KTSA 042332 SVSTSA SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 632 PM CDT SAT AUG 4 2012 OKC035-042341- /O.CAN.KTSA.SV.W.0177.000000T0000Z-120805T0000Z/ CRAIG OK- 632 PM CDT SAT AUG 4 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CRAIG COUNTY IS CANCELLED... THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED. GUSTY WINDS AND VERY HEAVY RAIN WILL STILL BE POSSIBLE WITH THIS STORM. OTHER STRONG THUNDERSTORMS WERE LOCATED OVER WEST CENTRAL PORTIONS OF CRAIG COUNTY AND COULD PRODUCE WIND GUSTS OF 40 TO 50 MPH. LAT...LON 3684 9540 3692 9541 3701 9517 3684 9513 TIME...MOT...LOC 2331Z 254DEG 21KT 3691 9527 $$
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 1:09 AM CDT | Red Flag Warning | TSA | Cherokee, Craig, Creek, Delaware, Haskell, McIntosh and 11 more | 22 hr |
| Aug 4, 5:20 PM CDT | Special Weather Statement | TSA | Craig | 25 min |
| Aug 4, 5:29 PM CDT | Special Weather Statement | TSA | Nowata | 31 min |
| Aug 4, 5:37 PM CDT | Special Weather Statement | TSA | Ottawa | 23 min |
| Aug 4, 5:46 PM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 28 min |
| Aug 4, 5:55 PM CDT | Special Weather Statement | TSA | Craig | 35 min |
| Aug 4, 6:26 PM CDT | Special Weather Statement | TSA | Nowata | 34 min |
| Aug 4, 6:29 PM CDT | Special Weather Statement | TSA | Craig | 31 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.