Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 182, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 10, 2021, 8:40 AM CDT for Jefferson County, Love County, Oklahoma; Clay County, Texas. It was in force for 50 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
- May 10, 2021, 8:40 AM CDT (13:40 UTC)
- Expired
- May 10, 2021, 9:30 AM CDT
- In force
- 50 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Jefferson County, OK, Love County, OK, Clay County, TX
The radar
The Altus AFB radar (KFDR), 142 km from the middle of the area, began a volume at 13:42 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 |
|---|---|---|---|
| May 10, 9:06 AM CDT | HAIL 1 | Burneyville, OK | MPING REPORT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 1.7 hours before the alert went out and 123 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
- 675 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 299 m²/s²
- 0-3 km storm-relative helicity
- 381 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.2
The text
As transmitted.
106
WUUS54 KOUN 101340
SVROUN
OKC067-085-TXC077-101430-
/O.NEW.KOUN.SV.W.0182.210510T1340Z-210510T1430Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
840 AM CDT Mon May 10 2021
The National Weather Service in Norman has issued a
* Severe Thunderstorm Warning for...
Southern Jefferson County in southern Oklahoma...
Northwestern Love County in southern Oklahoma...
Northeastern Clay County in northern Texas...
* Until 930 AM CDT.
* At 840 AM CDT, severe thunderstorms were located along a line
extending from near Ryan to 3 miles west of Oscar to 5 miles south
of Grady, moving east at 35 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...
Ryan, Leon, Sugden, Grady, Rubottom, Burneyville, Oscar, Courtney
and Petersburg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 3382 9744 3384 9746 3389 9745 3391 9747
3390 9759 3395 9759 3399 9767 3394 9776
3387 9782 3394 9802 3409 9800 3411 9766
3407 9756 3407 9730 3387 9725 3386 9728
3389 9731 3385 9733 3388 9733 3382 9737
TIME...MOT...LOC 1340Z 268DEG 32KT 3401 9797 3398 9782 3394 9768
HAIL...1.00IN
WIND...60MPH
$$
031 follow-up statement
560
WWUS54 KOUN 101357
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
857 AM CDT Mon May 10 2021
TXC077-101407-
/O.CAN.KOUN.SV.W.0182.000000T0000Z-210510T1430Z/
Clay TX-
857 AM CDT Mon May 10 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLAY COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 3382 9744 3384 9746 3389 9745 3391 9747
3390 9759 3395 9759 3399 9767 3394 9776
3387 9782 3394 9796 3404 9793 3407 9756
3407 9730 3387 9725 3386 9728 3389 9731
3385 9733 3388 9733 3382 9737
TIME...MOT...LOC 1357Z 272DEG 31KT 3398 9781 3395 9760 3393 9748
$$
OKC067-085-101430-
/O.CON.KOUN.SV.W.0182.000000T0000Z-210510T1430Z/
Jefferson OK-Love OK-
857 AM CDT Mon May 10 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 AM CDT
FOR SOUTHEASTERN JEFFERSON AND NORTHWESTERN LOVE COUNTIES...
At 857 AM CDT, severe thunderstorms were located along a line
extending from 3 miles west of Oscar to 6 miles southeast of Grady to
near Rubottom, moving east at 35 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...
Leon, Grady, Rubottom, Burneyville, Oscar, Courtney and Petersburg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 3382 9744 3384 9746 3389 9745 3391 9747
3390 9759 3395 9759 3399 9767 3394 9776
3387 9782 3394 9796 3404 9793 3407 9756
3407 9730 3387 9725 3386 9728 3389 9731
3385 9733 3388 9733 3382 9737
TIME...MOT...LOC 1357Z 272DEG 31KT 3398 9781 3395 9760 3393 9748
HAIL...1.00IN
WIND...60MPH
$$
03The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 7:30 AM CDT | Special Weather Statement | OUN | Cotton | 45 min |
| May 10, 8:29 AM CDT | Special Weather Statement | OUN | Jefferson, Love | 46 min |
| May 10, 9:02 AM CDT | Special Weather Statement | OUN | Carter | 28 min |
| May 10, 9:13 AM CDT | Special Weather Statement | OUN | Jefferson | 47 min |
| May 10, 9:19 AM CDT | Special Weather Statement | OUN | Love | 41 min |
| May 10, 9:22 AM CDT | Severe Thunderstorm Warning | OUN | Love | 38 min |
| May 10, 9:25 AM CDT | Severe Thunderstorm Warning | OUN | Jefferson, Love | 35 min |
| May 10, 9:39 AM CDT | Areal Flood Advisory | OUN | Jefferson, Love | 3 hr |
| May 10, 10:10 AM CDT | Special Weather Statement | OUN | Love | 35 min |
| May 10, 10:21 AM CDT | Special Weather Statement | OUN | Jefferson | 24 min |
| May 10, 10:30 AM CDT | Special Weather Statement | OUN | Coal | 30 min |
| May 10, 10:54 AM CDT | Special Weather Statement | OUN | Bryan | 36 min |
| May 10, 11:18 AM CDT | Special Weather Statement | OUN | Carter | 27 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2021Severe Thunderstorm Warnings in Texas, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.