Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 64, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Apr 9, 2021, 4:53 PM CDT for Kingfisher County, Oklahoma. It was in force for 52 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, 4:53 PM CDT (21:53 UTC)
- Expired
- Apr 9, 2021, 5:45 PM CDT
- In force
- 52 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Kingfisher County, OK
The radar
The Norman radar (KTLX), 79 km from the middle of the area, began a volume at 21:57 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, 5:23 PM CDT | HAIL 1.5 | 5 Nw Cashion, OK | ACCOMPANIED BY 60 MPH WIND |
| Apr 9, 5:30 PM CDT | HAIL 2 | 4 W Cashion, 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
Norman, OK (KOUN), launched 12:00Z, 9.9 hours before the alert went out and 83 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
- 1068 J/kg
- Mixed-layer CIN
- -311 J/kg
- Mixed-layer LCL
- 1414 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.6
The text
As transmitted.
372
WUUS54 KOUN 092153
SVROUN
OKC073-092245-
/O.NEW.KOUN.SV.W.0064.210409T2153Z-210409T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
453 PM CDT Fri Apr 9 2021
The National Weather Service in Norman has issued a
* Severe Thunderstorm Warning for...
Southern Kingfisher County in central Oklahoma...
* Until 545 PM CDT.
* At 453 PM CDT, a severe thunderstorm was located 5 miles northwest
of Kingfisher, moving southeast at 20 mph.
HAZARD...Quarter size hail.
SOURCE...Radar indicated.
IMPACT...Damage to vehicles is expected.
* Locations impacted include...
Kingfisher.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3587 9767 3576 9776 3574 9795 3593 9814
3601 9801
TIME...MOT...LOC 2153Z 303DEG 18KT 3590 9800
HAIL...1.00IN
WIND...<50MPH
$$
Mahale2 follow-up statements
478
WWUS54 KOUN 092215
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
515 PM CDT Fri Apr 9 2021
OKC073-092245-
/O.CON.KOUN.SV.W.0064.000000T0000Z-210409T2245Z/
Kingfisher OK-
515 PM CDT Fri Apr 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR SOUTHEASTERN KINGFISHER COUNTY...
At 515 PM CDT, a severe thunderstorm was located 4 miles east of
Kingfisher, moving southeast at 30 mph.
HAZARD...Ping pong ball size hail.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect damage
to roofs, siding, windows, and vehicles.
This severe thunderstorm will remain over mainly rural areas of
southeastern Kingfisher County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3576 9780 3581 9793 3595 9787 3587 9767
3576 9776
TIME...MOT...LOC 2215Z 295DEG 25KT 3584 9785
HAIL...1.50IN
WIND...<50MPH
$$
Mahale782
WWUS54 KOUN 092240
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
540 PM CDT Fri Apr 9 2021
OKC073-092250-
/O.EXP.KOUN.SV.W.0064.000000T0000Z-210409T2245Z/
Kingfisher OK-
540 PM CDT Fri Apr 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN KINGFISHER COUNTY
WILL EXPIRE AT 545 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
Remember, a Severe Thunderstorm Warning still remains in effect for
eastern Kingfisher County.
LAT...LON 3576 9780 3581 9793 3595 9787 3587 9767
3576 9776
TIME...MOT...LOC 2240Z 303DEG 18KT 3577 9772
$$
MahaleThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 2:57 AM CDT | Wind Advisory | OUN | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 31 more | 20 hr |
| Apr 9, 10:21 AM CDT | Special Weather Statement | OUN | Bryan | 24 min |
| Apr 9, 10:32 AM CDT | Special Weather Statement | OUN | Bryan | 28 min |
| Apr 9, 3:21 PM CDT | Special Weather Statement | OUN | Greer | 24 min |
| Apr 9, 3:28 PM CDT | Severe Thunderstorm Warning | OUN | Greer | 23 min |
| Apr 9, 3:35 PM CDT | Special Weather Statement | OUN | Washita | 40 min |
| Apr 9, 3:39 PM CDT | Special Weather Statement | OUN | Kingfisher | 36 min |
| Apr 9, 3:49 PM CDT | Special Weather Statement | OUN | Canadian | 26 min |
| Apr 9, 3:52 PM CDT | Special Weather Statement | OUN | Greer | 23 min |
| Apr 9, 3:57 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Grady | 48 min |
| Apr 9, 4:12 PM CDT | Special Weather Statement | OUN | Logan | 33 min |
| Apr 9, 4:13 PM CDT | Special Weather Statement | OUN | Washita | 32 min |
| Apr 9, 4:23 PM CDT | Special Weather Statement | OUN | Grant | 37 min |
| Apr 9, 4:25 PM CDT | Severe Thunderstorm Warning | OUN | Logan, Payne | 50 min |
| Apr 9, 4:29 PM CDT | Severe Thunderstorm Warning | OUN | Kiowa, Washita | 16 min |
| Apr 9, 4:36 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Grady | 39 min |
| Apr 9, 4:52 PM CDT | Special Weather Statement | OUN | Kingfisher | 23 min |
| Apr 9, 5:06 PM CDT | Severe Thunderstorm Warning | OUN | Grady | 39 min |
| Apr 9, 5:17 PM CDT | Severe Thunderstorm Warning | OUN | Logan, Noble, Payne | 43 min |
| Apr 9, 5:18 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher, Logan, Oklahoma | 42 min |
| Apr 9, 5:25 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Logan, Payne | 50 min |
| Apr 9, 5:31 PM CDT | Severe Thunderstorm Warning | OUN | Grady, McClain | 44 min |
| Apr 9, 5:36 PM CDT | Special Weather Statement | OUN | Pottawatomie | 24 min |
| Apr 9, 5:39 PM CDT | Special Weather Statement | OUN | Lincoln | 36 min |
| Apr 9, 5:48 PM CDT | Special Weather Statement | OUN | Lincoln | 27 min |
| Apr 9, 5:51 PM CDT | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 39 min |
| Apr 9, 5:57 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Logan, Oklahoma | 48 min |
| Apr 9, 6:05 PM CDT | Severe Thunderstorm Warning | OUN | Garvin, Grady, McClain, Stephens | 40 min |
| Apr 9, 6:09 PM CDT | Special Weather Statement | OUN | Lincoln | 36 min |
| Apr 9, 6:22 PM CDT | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 27 min |
| Apr 9, 6:34 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln | 56 min |
| Apr 9, 6:38 PM CDT | Special Weather Statement | OUN | Pottawatomie | 52 min |
| Apr 9, 6:58 PM CDT | Special Weather Statement | OUN | Pottawatomie, Seminole | 47 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.