Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 461, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jul 14, 2018, 6:42 PM CDT for Comanche County, Oklahoma. It was in force for 36 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
- Jul 14, 2018, 6:42 PM CDT (23:42 UTC)
- Expired
- Jul 14, 2018, 7:18 PM CDT
- In force
- 36 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
County Comanche County, OK
The radar
The Altus AFB radar (KFDR), 57 km from the middle of the area, began a volume at 23:42 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.
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.7 hours before the alert went out and 116 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
- 260 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 1662 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 Jul 14, 6:33 PM CDT, 9 minutes earlier.
Area forecast discussion, Jul 14, 6:33 PM CDT, 9 minutes before
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</html>Hazardous weather outlook, Jul 14, 12:00 PM CDT, 6 hours 42 minutes before
Hazardous Weather Outlook National Weather Service Norman OK 1200 PM CDT Sat Jul 14 2018 OKZ004>048-050>052-TXZ083>090-151700- 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- 1200 PM CDT Sat Jul 14 2018 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...This Afternoon and Tonight... .Thunderstorms... Scattered thunderstorms are expected again today. A few storms may produce strong wind gusts up to 60 mph, small hail, and very heavy rainfall which may result in localized flooding. .Heat... Heat index values will reach triple digits across north Texas and southern Oklahoma and the upper 90s across northern Oklahoma today. .DAYS TWO THROUGH SEVEN...Sunday through Friday... .Heat... Temperatures and heat index values are expected to be even higher next week. Heat index values will be over 105 and may approach 110 in some areas on Wednesday and Thursday afternoon. .Thunderstorms... The chances of thunderstorms will continue through Wednesday, although storms are not expected to be widespread. The strongest storms will be capable of producing strong and gusty winds as well as locally heavy rainfall. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook. MBS
In the hours before
Special weather statement, Jul 14, 5:32 PM CDT, 1 hour 10 minutes before
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</html>Special weather statement, Jul 14, 6:16 PM CDT, 26 minutes before
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</html>Local storm report, Jul 14, 6:19 PM CDT, 23 minutes before
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</html>Special weather statement, Jul 14, 6:21 PM CDT, 21 minutes before
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</html>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 7:32 PM CDT | Special Weather Statement | OUN | Kiowa | 28 min |
| Jul 13, 8:14 PM CDT | Special Weather Statement | OUN | Kiowa | 31 min |
| Jul 13, 10:19 PM CDT | Special Weather Statement | OUN | Comanche | 41 min |
| Jul 14, 2:03 AM CDT | Special Weather Statement | OUN | Grant | 27 min |
| Jul 14, 2:02 PM CDT | Special Weather Statement | OUN | Oklahoma | 28 min |
| Jul 14, 2:26 PM CDT | Special Weather Statement | OUN | Oklahoma | 34 min |
| Jul 14, 2:38 PM CDT | Special Weather Statement | OUN | Cleveland | 37 min |
| Jul 14, 2:45 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 30 min |
| Jul 14, 3:14 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 23 min |
| Jul 14, 4:00 PM CDT | Special Weather Statement | OUN | Roger Mills | 30 min |
| Jul 14, 4:27 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Custer, Dewey, Roger Mills | 26 min |
| Jul 14, 4:51 PM CDT | Special Weather Statement | OUN | Custer | 24 min |
| Jul 14, 5:32 PM CDT | Special Weather Statement | OUN | Custer, Dewey, Greer | 28 min |
| Jul 14, 6:13 PM CDT | Special Weather Statement | OUN | Custer | 17 min |
| Jul 14, 6:16 PM CDT | Special Weather Statement | OUN | Tillman | 29 min |
| Jul 14, 6:21 PM CDT | Special Weather Statement | OUN | Comanche | 24 min |
| Jul 14, 6:51 PM CDT | Special Weather Statement | OUN | Grady | 24 min |
| Jul 14, 1:58 PM CDT | Special Weather Statement | OUN | Clay | 32 min |
| Jul 14, 4:32 PM CDT | Special Weather Statement | OUN | Archer | 28 min |
| Jul 14, 5:40 PM CDT | Special Weather Statement | OUN | Baylor | 35 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.