Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 591, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Dec 17, 2021, 6:16 PM CST for Carter County, Jefferson County, Love County, Oklahoma. It was in force for 25 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
- Dec 17, 2021, 6:16 PM CST (00:16 UTC)
- Expired
- Dec 17, 2021, 6:41 PM CST
- In force
- 25 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Carter County, OK, Jefferson County, OK, Love County, OK
The radar
The Altus AFB radar (KFDR), 128 km from the middle of the area, began a volume at 00:17 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 nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 0.3 hours before the alert went out and 139 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
- 907 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 1218 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 2.4
The text
As transmitted.
276
WUUS54 KOUN 180016
SVROUN
OKC019-067-085-180100-
/O.NEW.KOUN.SV.W.0591.211218T0016Z-211218T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
616 PM CST Fri Dec 17 2021
The National Weather Service in Norman has issued a
* Severe Thunderstorm Warning for...
Southeastern Jefferson County in southern Oklahoma...
Northwestern Love County in southern Oklahoma...
Southwestern Carter County in southern Oklahoma...
* Until 700 PM CST.
* At 615 PM CST, a severe thunderstorm was located near Oscar, moving
northeast at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Lone Grove, Healdton, Wilson, Ringling, Grady, Oscar and Cornish.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3408 9786 3429 9734 3408 9722 3398 9764
3399 9767 3399 9768 3397 9771 3394 9781
TIME...MOT...LOC 0015Z 246DEG 35KT 3403 9773
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Zwink1 follow-up statement
419
WWUS54 KOUN 180041
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
641 PM CST Fri Dec 17 2021
OKC019-067-085-180051-
/O.CAN.KOUN.SV.W.0591.000000T0000Z-211218T0100Z/
Jefferson OK-Love OK-Carter OK-
641 PM CST Fri Dec 17 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN JEFFERSON...
NORTHWESTERN LOVE AND SOUTHWESTERN CARTER COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, therefore the warning has been cancelled. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 3408 9786 3429 9734 3408 9722 3398 9764
3399 9767 3399 9768 3397 9771 3394 9781
TIME...MOT...LOC 0039Z 246DEG 35KT 3413 9745
$$
ZwinkThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 17, 6:04 PM CST | Special Weather Statement | OUN | Jefferson | 26 min |
| Dec 17, 6:08 PM CST | Special Weather Statement | OUN | Pottawatomie | 37 min |
| Dec 17, 6:10 PM CST | Special Weather Statement | OUN | Carter, Murray | 35 min |
| Dec 17, 6:30 PM CST | Severe Thunderstorm Warning | OUN | Carter, Johnston, Murray, Pontotoc | 45 min |
| Dec 17, 6:40 PM CST | Severe Thunderstorm Warning | OUN | Hughes | 18 min |
| Dec 17, 7:10 PM CST | Special Weather Statement | OUN | Coal | 35 min |
| Dec 17, 7:47 PM CST | Special Weather Statement | OUN | Cotton | 28 min |
| Dec 17, 7:48 PM CST | Special Weather Statement | OUN | Coal | 27 min |
| Dec 17, 8:16 PM CST | Special Weather Statement | OUN | Coal | 14 min |
| Dec 17, 8:17 PM CST | Special Weather Statement | OUN | Stephens | 28 min |
| Dec 17, 8:26 PM CST | Special Weather Statement | OUN | Cotton | 34 min |
| Dec 17, 8:47 PM CST | Severe Thunderstorm Warning | OUN | Carter, Garvin, Jefferson, Murray, Stephens | 27 min |
| Dec 17, 9:15 PM CST | Special Weather Statement | OUN | Murray | 30 min |
| Dec 17, 9:16 PM CST | Special Weather Statement | OUN | Stephens | 29 min |
| Dec 17, 9:47 PM CST | Special Weather Statement | OUN | Murray, Pontotoc | 28 min |
| Dec 17, 10:18 PM CST | Special Weather Statement | OUN | Pontotoc | 27 min |
| Dec 17, 10:34 PM CST | Areal Flood Advisory | OUN | Pontotoc | 116 min |
| Dec 17, 10:56 PM CST | Special Weather Statement | OUN | Johnston, Marshall | 34 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2021Every severe thunderstorm warning in 2021
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.