Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 252, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 8, 2020, 2:13 AM CDT for 4 counties in Oklahoma. It was in force for 47 min. 4 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
- May 8, 2020, 2:13 AM CDT (07:13 UTC)
- Expired
- May 8, 2020, 3:00 AM CDT
- In force
- 47 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Carter County, OK, Jefferson County, OK, Murray County, OK, Stephens County, OK
The radar
The Norman radar (KTLX), 114 km from the middle of the area, began a volume at 07:14 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 8, 2:14 AM CDT | HAIL 2 | Duncan, OK | SPOTTERNETWORK REPORT. |
| May 8, 2:20 AM CDT | HAIL 1 | Duncan, OK | |
| May 8, 2:53 AM CDT | HAIL 1.75 | 7 N Ringling, OK | RELAYED THROUGH NWSCHAT. |
| May 8, 2:57 AM CDT | HAIL 1.5 | Healdton, OK | RELAYED THROUGH NWSCHAT. |
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 |
|---|---|---|---|
| May 7, 11:25 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 7.2 hours before the alert went out and 99 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
- 1914 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 596 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
471
WUUS54 KOUN 080713
SVROUN
OKC019-067-099-137-080800-
/O.NEW.KOUN.SV.W.0252.200508T0713Z-200508T0800Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Norman OK
213 AM CDT Fri May 8 2020
The National Weather Service in Norman has issued a
* Severe Thunderstorm Warning for...
Northeastern Jefferson County in southern Oklahoma...
Stephens County in southern Oklahoma...
Western Carter County in southern Oklahoma...
Western Murray County in southern Oklahoma...
* Until 300 AM CDT.
* At 212 AM CDT, severe thunderstorms were located along a line
extending from 5 miles south of Bray to near Comanche, moving
southeast at 50 mph. Ping pong ball size hail was reported in
Duncan.
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...
Duncan, Lone Grove, Healdton, Wilson, Comanche, Bray, Ringling,
Springer, Velma, Tatums, Loco, Ratliff City, Graham, Pooleville,
Milo, Empire City, Cornish and Fox.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3439 9809 3465 9783 3452 9756 3451 9756
3451 9754 3431 9715 3407 9740 3407 9756
3405 9756
TIME...MOT...LOC 0712Z 303DEG 45KT 3456 9781 3441 9796
HAIL...1.50IN
WIND...60MPH
$$
..speg.2 follow-up statements
578
WWUS54 KOUN 080733 RRA
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
233 AM CDT Fri May 8 2020
OKC019-067-099-137-080800-
/O.CON.KOUN.SV.W.0252.000000T0000Z-200508T0800Z/
Jefferson OK-Stephens OK-Carter OK-Murray OK-
233 AM CDT Fri May 8 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT
FOR NORTHEASTERN JEFFERSON...SOUTHEASTERN STEPHENS...WESTERN CARTER
AND WESTERN MURRAY COUNTIES...
At 233 AM CDT, severe thunderstorms were located along a line
extending from 4 miles northeast of Loco to 9 miles northwest of
Ringling, moving southeast at 50 mph.
HAZARD...Two inch hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Lone Grove, Healdton, Wilson, Ringling, Springer, Velma, Tatums,
Loco, Ratliff City, Graham, Pooleville, Milo, Cornish and Fox.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3426 9789 3456 9763 3452 9756 3451 9756
3451 9754 3431 9715 3407 9740 3407 9756
3405 9756
TIME...MOT...LOC 0733Z 308DEG 43KT 3436 9761 3427 9772
HAIL...2.00IN
WIND...60MPH
$$
..speg.068
WWUS54 KOUN 080749
SVSOUN
Severe Weather Statement
National Weather Service Norman OK
249 AM CDT Fri May 8 2020
OKC137-080757-
/O.CAN.KOUN.SV.W.0252.000000T0000Z-200508T0800Z/
Stephens OK-
249 AM CDT Fri May 8 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN STEPHENS COUNTY
IS CANCELLED...
The storms which prompted the warning have moved into Jefferson and
Carter Counties. Therefore, the warning has been cancelled for
Stephens County.
LAT...LON 3423 9784 3429 9776 3429 9756 3434 9756
3445 9743 3431 9715 3407 9740 3407 9756
3405 9756
TIME...MOT...LOC 0747Z 289DEG 38KT 3431 9741 3420 9758
$$
OKC019-067-099-080800-
/O.CON.KOUN.SV.W.0252.000000T0000Z-200508T0800Z/
Jefferson OK-Carter OK-Murray OK-
249 AM CDT Fri May 8 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 AM CDT
FOR NORTHEASTERN JEFFERSON...WESTERN CARTER AND WESTERN MURRAY
COUNTIES...
At 247 AM CDT, severe thunderstorms were located along a line
extending from near Graham to near Ringling, moving east at 45 mph.
HAZARD...Ping pong ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Lone Grove, Healdton, Wilson, Ringling, Springer, Graham, Pooleville,
Milo, Cornish and Fox.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3423 9784 3429 9776 3429 9756 3434 9756
3445 9743 3431 9715 3407 9740 3407 9756
3405 9756
TIME...MOT...LOC 0747Z 289DEG 38KT 3431 9741 3420 9758
HAIL...1.50IN
WIND...60MPH
$$
..speg.The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 7, 7:01 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Kiowa, Washita | 29 min |
| May 7, 8:31 PM CDT | Special Weather Statement | OUN | Tillman | 29 min |
| May 7, 9:07 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Kiowa, Tillman | 27 min |
| May 7, 9:17 PM CDT | Severe Thunderstorm Warning | OUN | Harper, Woods, Woodward | 43 min |
| May 7, 9:55 PM CDT | Severe Thunderstorm Warning | OUN | Major, Woods, Woodward | 50 min |
| May 7, 9:57 PM CDT | Special Weather Statement | OUN | Harper | 33 min |
| May 7, 10:09 PM CDT | Special Weather Statement | OUN | Pottawatomie | 36 min |
| May 7, 10:33 PM CDT | Special Weather Statement | OUN | McClain | 27 min |
| May 7, 10:39 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Dewey, Ellis, Roger Mills | 51 min |
| May 7, 10:40 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Major | 50 min |
| May 7, 10:56 PM CDT | Special Weather Statement | OUN | Blaine | 34 min |
| May 7, 11:00 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Roger Mills | 30 min |
| May 7, 11:12 PM CDT | Special Weather Statement | OUN | Pottawatomie | 33 min |
| May 7, 11:16 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Kingfisher | 29 min |
| May 7, 11:17 PM CDT | Special Weather Statement | OUN | Carter | 28 min |
| May 7, 11:18 PM CDT | Special Weather Statement | OUN | Oklahoma | 27 min |
| May 7, 11:25 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Custer, Ellis, Roger Mills, Washita | 50 min |
| May 7, 11:28 PM CDT | Special Weather Statement | OUN | Custer | 32 min |
| May 7, 11:31 PM CDT | Areal Flood Advisory | OUN | Dewey, Ellis, Roger Mills | 3 hr |
| May 7, 11:32 PM CDT | Special Weather Statement | OUN | Canadian | 28 min |
| May 7, 11:44 PM CDT | Special Weather Statement | OUN | Lincoln | 31 min |
| May 7, 11:44 PM CDT | Severe Thunderstorm Warning | OUN | Noble, Payne | 36 min |
| May 8, 12:02 AM CDT | Special Weather Statement | OUN | Canadian, Oklahoma | 28 min |
| May 8, 12:08 AM CDT | Severe Thunderstorm Warning | OUN | Beckham, Custer, Washita | 52 min |
| May 8, 12:10 AM CDT | Severe Thunderstorm Warning | OUN | Canadian | 50 min |
| May 8, 12:15 AM CDT | Special Weather Statement | OUN | Seminole | 45 min |
| May 8, 12:22 AM CDT | Areal Flood Advisory | OUN | Canadian, Oklahoma | 3 hr |
| May 8, 12:32 AM CDT | Special Weather Statement | OUN | Oklahoma | 28 min |
| May 8, 12:34 AM CDT | Special Weather Statement | OUN | Grady | 26 min |
| May 8, 12:40 AM CDT | Severe Thunderstorm Warning | OUN | Canadian, Grady | 38 min |
| May 8, 12:45 AM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche, Kiowa, Washita | 45 min |
| May 8, 1:01 AM CDT | Severe Thunderstorm Warning | OUN | Cleveland, McClain | 59 min |
| May 8, 1:09 AM CDT | Areal Flood Advisory | OUN | Canadian, Cleveland, Grady, McClain, Oklahoma | 3 hr |
| May 8, 1:19 AM CDT | Severe Thunderstorm Warning | OUN | Caddo, Grady | 26 min |
| May 8, 1:27 AM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche, Cotton, Stephens | 48 min |
| May 8, 1:31 AM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Garvin, McClain, Pontotoc, Pottawatomie, Seminole | 44 min |
| May 8, 1:45 AM CDT | Severe Thunderstorm Warning | OUN | Garvin, Grady, McClain | 30 min |
| May 8, 1:58 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal, Hughes, Pontotoc, Seminole | 62 min |
| May 8, 2:02 AM CDT | Severe Thunderstorm Warning | OUN | Carter, Garvin, Johnston, Murray, Pontotoc | 43 min |
| May 8, 2:30 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Bryan, Carter, Coal, Johnston, Marshall and 2 more | 60 min |
| May 8, 2:57 AM CDT | Severe Thunderstorm Warning | OUN | Carter, Love, Marshall | 63 min |
| May 8, 3:00 AM CDT | Severe Thunderstorm Warning | OUN | Atoka | 15 min |
| May 8, 3:27 AM CDT | Wind Advisory | OUN | Cotton, Harmon, Jackson, Jefferson, Tillman | 9 hr |
| May 8, 3:29 AM CDT | Special Weather Statement | OUN | Bryan | 31 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2020Every severe thunderstorm warning in 2020
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.