Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 445, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jul 6, 2018, 4:07 PM CDT for Dewey County, Oklahoma. It was in force for 23 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 6, 2018, 4:07 PM CDT (21:07 UTC)
- Expired
- Jul 6, 2018, 4:30 PM CDT
- In force
- 23 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Dewey County, OK
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 9.1 hours before the alert went out and 169 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
- 1253 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 1257 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 49 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 Jul 6, 3:21 PM CDT, 46 minutes earlier.
Area forecast discussion, Jul 6, 3:21 PM CDT, 46 minutes before
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</html>Hazardous weather outlook, Jul 6, 11:46 AM CDT, 4 hours 21 minutes before
Hazardous Weather Outlook National Weather Service Norman OK 1146 AM CDT Fri Jul 6 2018 OKZ004>048-050>052-TXZ083>090-071700- 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- 1146 AM CDT Fri Jul 6 2018 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...Through Tonight... .Thunderstorms... Isolated to scattered thunderstorms are possible. The greatest coverage of storms are expected across western and southern Oklahoma and adjacent parts of north Texas through the early evening. The stronger storms will produce very heavy rainfall and strong gusty winds. .DAYS TWO THROUGH SEVEN...Saturday through Thursday... .Thunderstorms... Thunderstorms are possible across portions of the area Saturday, and also Monday through Wednesday. Severe storms are unlikely. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook. Mahale
In the hours before
Special weather statement, Jul 6, 2:49 PM CDT, 1 hour 18 minutes before
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</html>Special weather statement, Jul 6, 3:22 PM CDT, 45 minutes before
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</html>Local storm report, Jul 6, 3:24 PM CDT, 43 minutes before
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</html>Special weather statement, Jul 6, 3:54 PM CDT, 13 minutes before
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</html>Special weather statement, Jul 6, 4:03 PM CDT, 4 minutes before
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Please try again in a few minutes.
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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 6, 12:08 PM CDT | Special Weather Statement | OUN | Kiowa | 37 min |
| Jul 6, 1:11 PM CDT | Special Weather Statement | OUN | Jackson | 34 min |
| Jul 6, 1:40 PM CDT | Special Weather Statement | OUN | Roger Mills | 35 min |
| Jul 6, 1:55 PM CDT | Special Weather Statement | OUN | Harper | 35 min |
| Jul 6, 1:58 PM CDT | Special Weather Statement | OUN | Tillman | 32 min |
| Jul 6, 2:06 PM CDT | Severe Thunderstorm Warning | OUN | Tillman | 24 min |
| Jul 6, 2:15 PM CDT | Special Weather Statement | OUN | Harper | 30 min |
| Jul 6, 2:20 PM CDT | Special Weather Statement | OUN | Beckham | 25 min |
| Jul 6, 2:29 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Tillman | 31 min |
| Jul 6, 2:31 PM CDT | Special Weather Statement | OUN | Harper | 29 min |
| Jul 6, 2:34 PM CDT | Special Weather Statement | OUN | Roger Mills | 26 min |
| Jul 6, 2:49 PM CDT | Special Weather Statement | OUN | Beckham | 26 min |
| Jul 6, 2:55 PM CDT | Severe Thunderstorm Warning | OUN | Roger Mills | 35 min |
| Jul 6, 3:22 PM CDT | Special Weather Statement | OUN | Jackson | 23 min |
| Jul 6, 3:23 PM CDT | Special Weather Statement | OUN | Beckham | 37 min |
| Jul 6, 3:54 PM CDT | Special Weather Statement | OUN | Dewey | 36 min |
| Jul 6, 4:03 PM CDT | Special Weather Statement | OUN | Harmon | 27 min |
| Jul 6, 4:14 PM CDT | Special Weather Statement | OUN | Roger Mills | 31 min |
| Jul 6, 4:42 PM CDT | Areal Flood Advisory | OUN | Beckham, Custer, Washita | 2 hr |
| Jul 6, 4:44 PM CDT | Special Weather Statement | OUN | Kay | 31 min |
| Jul 6, 4:52 PM CDT | Special Weather Statement | OUN | Atoka | 23 min |
| Jul 6, 4:54 PM CDT | Special Weather Statement | OUN | Roger Mills | 36 min |
| Jul 6, 5:07 PM CDT | Special Weather Statement | OUN | Noble | 23 min |
| Jul 6, 5:14 PM CDT | Special Weather Statement | OUN | Atoka | 31 min |
| Jul 6, 5:19 PM CDT | Special Weather Statement | OUN | Lincoln | 26 min |
| Jul 6, 5:42 PM CDT | Special Weather Statement | OUN | Cotton | 33 min |
| Jul 6, 5:46 PM CDT | Special Weather Statement | OUN | Lincoln | 29 min |
| Jul 6, 6:00 PM CDT | Special Weather Statement | OUN | Greer | 30 min |
| Jul 6, 6:14 PM CDT | Special Weather Statement | OUN | Bryan | 31 min |
| Jul 6, 6:38 PM CDT | Special Weather Statement | OUN | Cotton | 37 min |
| Jul 6, 1:35 PM CDT | Special Weather Statement | OUN | Hardeman | 25 min |
| Jul 6, 6:47 PM CDT | Special Weather Statement | OUN | Cooke | 28 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.