Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 80, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Apr 9, 2021, 8:07 PM CDT for Love County, Marshall County, Oklahoma. It was in force for 53 min. 2 reports 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, 2021, 8:07 PM CDT (01:07 UTC)
- Expired
- Apr 9, 2021, 9:00 PM CDT
- In force
- 53 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Love County, OK, Marshall County, OK
The radar
The Dallas/Ft Worth radar (KFWS), 153 km from the middle of the area, began a volume at 01:09 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, 8:28 PM CDT | HAIL 1 | 1 N Willis, OK | |
| Apr 9, 8:28 PM CDT | HAIL 1.5 | Willis, OK |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 9, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 1.1 hours before the alert went out and 125 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
- 3129 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1600 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 101 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.7
- Supercell composite
- 11.7
The text
As transmitted.
847
WUUS54 KOUN 100107
SVROUN
OKC085-095-100200-
/O.NEW.KOUN.SV.W.0080.210410T0107Z-210410T0200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
807 PM CDT Fri Apr 9 2021
The National Weather Service in Norman has issued a
* Severe Thunderstorm Warning for...
East central Love County in southern Oklahoma...
Southwestern Marshall County in southeastern Oklahoma...
* Until 900 PM CDT.
* At 807 PM CDT, a severe thunderstorm was located 4 miles west of
Lebanon, moving southeast at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* Locations impacted include...
Lebanon, Willis and western Lake Texoma.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3387 9679 3387 9683 3385 9685 3387 9689
3394 9690 3396 9692 3394 9697 3396 9698
3395 9700 3389 9698 3384 9703 3398 9707
3406 9687 3386 9669 3383 9671 3383 9676
TIME...MOT...LOC 0107Z 318DEG 16KT 3396 9698
HAIL...1.50IN
WIND...60MPH
$$
Mahale1 follow-up statement
571
WWUS54 KOUN 100130
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
830 PM CDT Fri Apr 9 2021
OKC085-100140-
/O.CAN.KOUN.SV.W.0080.000000T0000Z-210410T0200Z/
Love OK-
830 PM CDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LOVE COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 3387 9679 3387 9683 3385 9685 3387 9688
3394 9690 3398 9680 3386 9669 3383 9671
3383 9676
TIME...MOT...LOC 0130Z 306DEG 19KT 3389 9682
$$
OKC095-100200-
/O.CON.KOUN.SV.W.0080.000000T0000Z-210410T0200Z/
Marshall OK-
830 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR SOUTHWESTERN MARSHALL COUNTY...
At 830 PM CDT, a severe thunderstorm was located over Willis, moving
southeast at 20 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Emergency management reported ping pong size hail near
Willis.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Willis and western Lake Texoma.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3387 9679 3387 9683 3385 9685 3387 9688
3394 9690 3398 9680 3386 9669 3383 9671
3383 9676
TIME...MOT...LOC 0130Z 306DEG 19KT 3389 9682
HAIL...1.50IN
WIND...60MPH
$$
MahaleThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 7:08 PM CDT | Severe Thunderstorm Warning | OUN | McClain, Pontotoc, Pottawatomie, Seminole | 52 min |
| Apr 9, 7:27 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, McClain, Pontotoc, Pottawatomie, Seminole | 33 min |
| Apr 9, 7:35 PM CDT | Special Weather Statement | OUN | Marshall | 25 min |
| Apr 9, 7:36 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Love, Marshall | 39 min |
| Apr 9, 7:39 PM CDT | Severe Thunderstorm Warning | OUN | Hughes, Seminole | 51 min |
| Apr 9, 7:51 PM CDT | Severe Thunderstorm Warning | OUN | Coal, Hughes, Johnston, Murray, Pontotoc, Seminole | 54 min |
| Apr 9, 8:11 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Coal, Johnston, Marshall, Murray, Pontotoc | 34 min |
| Apr 9, 8:38 PM CDT | Severe Thunderstorm Warning | OUN | Atoka, Bryan, Coal, Hughes, Johnston, Marshall | 67 min |
| Apr 9, 9:15 PM CDT | Severe Thunderstorm Warning | OUN | Atoka, Bryan, Marshall | 60 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.