Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 238, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 25, 2018, 3:32 AM CDT for Garfield County, Grant County, Oklahoma. It was in force for 43 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 25, 2018, 3:32 AM CDT (08:32 UTC)
- Expired
- May 25, 2018, 4:15 AM CDT
- In force
- 43 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Garfield County, OK, Grant County, OK
The radar
The Vance AFB radar (KVNX), 35 km from the middle of the area, began a volume at 08:35 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
Norman, OK (KOUN), launched 00:00Z, 8.5 hours before the alert went out and 156 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
- 1038 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1381 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at May 24, 11:20 PM CDT, 4 hours 12 minutes earlier.
Area forecast discussion, May 24, 11:20 PM CDT, 4 hours 12 minutes before
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</html>Hazardous weather outlook, May 24, 9:33 PM CDT, 5 hours 59 minutes before
Hazardous Weather Outlook National Weather Service Norman OK 933 PM CDT Thu May 24 2018 OKZ004>048-050>052-TXZ083>090-251300- Harper-Woods-Alfalfa-Grant-Kay-Ellis-Woodward-Major-Garfield- Noble-Roger Mills-Dewey-Custer-Blaine-Kingfisher-Logan-Payne- Beckham-Washita-Caddo-Canadian-Oklahoma-Lincoln-Grady-McClain- Cleveland-Pottawatomie-Seminole-Hughes-Harmon-Greer-Kiowa-Jackson- Tillman-Comanche-Stephens-Garvin-Murray-Pontotoc-Coal-Cotton- Jefferson-Carter-Johnston-Atoka-Love-Marshall-Bryan-Hardeman- Foard-Wilbarger-Wichita-Knox-Baylor-Archer-Clay- 933 PM CDT Thu May 24 2018 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...Through Tonight... .Thunderstorms... Thunderstorms will be possible overnight, mainly across northern Oklahoma. A few of the storms may be strong, with heavy rain, small hail, and gusty winds. .DAYS TWO THROUGH SEVEN...Friday through Wednesday... .Thunderstorms... Thunderstorms are expected to develop Friday afternoon, primarily across the northern half of Oklahoma. A few of these storms could be severe, with the greatest hazard being damaging wind gusts. Thunderstorms may increase in coverage Friday evening, and move southward across much of the area through early Saturday morning. A few thunderstorms could move into western Oklahoma during the evening hours Sunday, Monday, and Tuesday. Severe thunderstorms are unlikely during this period. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook. Mahale/CmS
In the hours before
Special weather statement, May 25, 12:56 AM CDT, 2 hours 36 minutes before
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</html>Special weather statement, May 25, 2:17 AM CDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 217 AM CDT FRI MAY 25 2018 OKZ005>007-250800- Alfalfa OK-Woods OK-Grant OK- 217 AM CDT FRI MAY 25 2018 ...SIGNIFICANT WEATHER ADVISORY FOR Alfalfa...eastern Woods and northwestern Grant Counties Until 300 AM CDT... AT 214 AM CDT, a strong thunderstorm was located 4 miles northwest of Amorita, moving southeast at 45 MPH. HAZARDS INCLUDE... Hail up to the size of nickels... Wind gusts over 50 MPH... Frequent cloud to ground lightning... Locations impacted include... Cherokee, Wakita, Jet, Burlington, Manchester, Amorita, Byron, Ingersoll, Great Salt Plains Lake, Driftwood, Capron and Waldron. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. && LAT...LON 3652 9820 3689 9864 3700 9847 3700 9775 TIME...MOT...LOC 0714Z 305DEG 37KT 3696 9836 03
Special weather statement, May 25, 2:53 AM CDT, 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
253 AM CDT FRI MAY 25 2018
OKZ006-007-012-250845-
Garfield OK-Alfalfa OK-Grant OK-
253 AM CDT FRI MAY 25 2018
...SIGNIFICANT WEATHER ADVISORY FOR northern Garfield...southern
Alfalfa and Grant Counties Until 345 AM CDT...
AT 249 AM CDT, strong thunderstorms were along a line extending from
9 miles east of Manchester to 3 miles south of Wakita to near Jet to
3 miles southwest of Lambert, moving east at 35 MPH.
HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 40 MPH...
LAT...LON 3665 9748 3648 9747 3648 9841 3668 9854
3672 9834 3687 9804 3700 9797 3700 9746
TIME...MOT...LOC 0749Z 287DEG 30KT 3701 9787 3683 9792 3667 9821 3664
9846
SIXThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 7:15 PM CDT | Special Weather Statement | OUN | Alfalfa | 30 min |
| May 25, 12:56 AM CDT | Special Weather Statement | OUN | Woods | 49 min |
| May 25, 1:45 AM CDT | Special Weather Statement | OUN | Woods | 45 min |
| May 25, 2:17 AM CDT | Special Weather Statement | OUN | Alfalfa | 43 min |
| May 25, 2:53 AM CDT | Special Weather Statement | OUN | Grant | 52 min |
| May 25, 4:09 AM CDT | Special Weather Statement | OUN | Garfield, Noble | 51 min |
| May 25, 4:27 AM CDT | Special Weather Statement | OUN | Alfalfa | 33 min |
| May 25, 4:43 AM CDT | Special Weather Statement | OUN | Kingfisher, Logan | 32 min |
| May 25, 4:52 AM CDT | Special Weather Statement | OUN | Woods | 23 min |
| May 25, 5:00 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa | 30 min |
| May 25, 5:18 AM CDT | Special Weather Statement | OUN | Canadian, Kingfisher, Lincoln, Logan, Oklahoma, Payne | 27 min |
| May 25, 5:21 AM CDT | Special Weather Statement | OUN | Alfalfa | 24 min |
| May 25, 5:31 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa | 44 min |
| May 25, 6:06 AM CDT | Areal Flood Advisory | OUN | Alfalfa, Woods | 3 hr |
| May 25, 6:27 AM CDT | Special Weather Statement | OUN | Garfield | 48 min |
| May 25, 6:47 AM CDT | Areal Flood Advisory | OUN | Logan, Oklahoma | 118 min |
| May 25, 7:16 AM CDT | Special Weather Statement | OUN | Canadian, Kingfisher | 29 min |
| May 25, 7:53 AM CDT | Special Weather Statement | OUN | Garfield | 22 min |
| May 25, 7:56 AM CDT | Special Weather Statement | OUN | Cleveland | 34 min |
| May 25, 8:04 AM CDT | Areal Flood Advisory | OUN | Cleveland, Oklahoma | 3 hr |
| May 25, 8:38 AM CDT | Special Weather Statement | OUN | Woods | 37 min |
| May 25, 9:09 AM CDT | Special Weather Statement | OUN | Woods | 36 min |
| May 25, 9:27 AM CDT | Special Weather Statement | OUN | Stephens | 33 min |
| May 25, 9:50 AM CDT | Special Weather Statement | OUN | Garfield | 25 min |
| May 25, 10:27 AM CDT | Special Weather Statement | OUN | Jefferson, Love, Marshall | 33 min |
| May 25, 10:30 AM CDT | Special Weather Statement | OUN | Noble | 30 min |
| May 25, 10:54 AM CDT | Special Weather Statement | OUN | Payne | 36 min |
| May 25, 11:01 AM CDT | Special Weather Statement | OUN | Bryan, Love, Marshall | 29 min |
| May 25, 11:10 AM CDT | Special Weather Statement | OUN | Payne | 35 min |
| May 25, 11:25 AM CDT | Special Weather Statement | OUN | Lincoln | 35 min |
| May 25, 11:39 AM CDT | Special Weather Statement | OUN | Lincoln | 36 min |
| May 25, 11:55 AM CDT | Severe Thunderstorm Warning | OUN | Bryan | 35 min |
| May 25, 12:07 PM CDT | Special Weather Statement | OUN | Oklahoma | 23 min |
| May 25, 1:27 PM CDT | Special Weather Statement | OUN | Garfield | 33 min |
| May 25, 3:06 PM CDT | Special Weather Statement | OUN | Cleveland | 24 min |
| May 25, 4:07 PM CDT | Special Weather Statement | OUN | Pottawatomie | 23 min |
| May 25, 4:52 PM CDT | Special Weather Statement | OUN | Seminole | 38 min |
| May 25, 5:29 PM CDT | Special Weather Statement | OUN | Seminole | 31 min |
| May 25, 5:53 PM CDT | Special Weather Statement | OUN | Hardeman | 37 min |
| May 25, 6:02 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman | 43 min |
| May 25, 6:25 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman | 30 min |
| May 25, 6:34 PM CDT | Special Weather Statement | OUN | Wilbarger | 26 min |
| May 25, 6:37 PM CDT | Special Weather Statement | OUN | Foard | 23 min |
| May 25, 6:43 PM CDT | Special Weather Statement | OUN | Wilbarger | 32 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2018Every severe thunderstorm warning in 2018
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.