Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 419, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jun 25, 2018, 3:31 AM CDT for 5 counties in Oklahoma; 5 counties in Texas. It was in force for 44 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
- Jun 25, 2018, 3:31 AM CDT (08:31 UTC)
- Expired
- Jun 25, 2018, 4:15 AM CDT
- In force
- 44 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Comanche County, OK, Cotton County, OK, Jefferson County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 49 km from the middle of the area, began a volume at 08:31 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 24, 10:08 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 8.5 hours before the alert went out and 163 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
- 218 J/kg
- Mixed-layer CIN
- -476 J/kg
- Mixed-layer LCL
- 2275 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 192 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
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 Jun 25, 3:11 AM CDT, 20 minutes earlier.
Area forecast discussion, Jun 25, 3:11 AM CDT, 20 minutes before
Area Forecast Discussion National Weather Service Norman OK 311 AM CDT Mon Jun 25 2018 .DISCUSSION... Yet another MCS making its way across Oklahoma early this morning. Possibly the most significant one of the week. This complex should continue to move east and southeast this morning. However, there are some indications that it may stall or have some chance of some lingering rain across central into eastern Oklahoma through the day. This will lead to some isolated flooding concerns. However,overall low confidence in this scenario and location of possible heavier rain, also isolated nature will preclude issuance of flood watch at this time. If we do get some breaks in the activity this afternoon models bring another lobe of energy around the trough in the plains later today. This will lead to another round of showers and thunderstorms from southwest into central and northeast Oklahoma late today and tonight. Expected cloud cover and lower amounts of instability should limit overall severe risk for later today and tonight, however a few strong to possibly severe storms still appear possible. After tonight, trough moves off to the northeast and we see mid- level ridge build northeast out into the Plains, which will limit precip chances and bring warmer temperatures to the area through remainder of the week. Could see ridge shift east far enough by next weekend for rain chances to return to the area. && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 83 72 93 76 / 50 50 0 0 Hobart OK 86 72 97 77 / 30 30 0 10 Wichita Falls TX 96 76 98 79 / 30 40 0 0 Gage OK 83 68 97 72 / 10 10 0 10 Ponca City OK 84 71 94 75 / 50 40 0 10 Durant OK 92 76 93 76 / 40 20 0 0 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && 10/30
Hazardous weather outlook, Jun 24, 10:34 PM CDT, 4 hours 57 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Norman OK 1034 PM CDT Sun Jun 24 2018 OKZ004>048-050>052-TXZ083>090-260345- 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- 1034 PM CDT Sun Jun 24 2018 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...Tonight... .Thunderstorms... There is a slight risk for severe thunderstorms overnight. Location... The slight risk is generally along and west of an Alva to Clinton and Seymour, Texas line. A marginal risk covers the area east of the slight area to around Interstate 35. Timing... After 11 PM through 5 AM Monday. Impacts... Damaging wind gusts up to 80 mph. Heavy rainfall that may cause localized flooding. Hail up to the size of golf balls. Discussion... Thunderstorms over southeastern Colorado and western Kansas will move through parts of Oklahoma overnight. Strong damaging winds will be the main risk with some hail and heavy rainfall possible. .SPOTTER AND EMERGENCY MANAGEMENT STATEMENT... Storm spotter groups and emergency management personnel across the risk area should prepare for severe weather operations. .DAYS TWO THROUGH SEVEN...Monday through Saturday... .Thunderstorms... There will be a chance for thunderstorms Monday into early Tuesday. A few strong thunderstorms are possible Monday. .Heat... Heat index values from 100 to 105 degrees are forecast through much of this week. If you will be outdoors, limit strenuous activities and take frequent breaks. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook.
In the hours before
Local storm report, Jun 25, 3:00 AM CDT, 31 minutes before
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</html>Local storm report, Jun 25, 3:31 AM CDT, 0 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 |
|---|---|---|---|---|
| Jun 24, 8:47 PM CDT | Special Weather Statement | OUN | Logan | 28 min |
| Jun 24, 9:53 PM CDT | Special Weather Statement | OUN | Roger Mills | 37 min |
| Jun 24, 10:20 PM CDT | Special Weather Statement | OUN | Harper | 25 min |
| Jun 24, 10:32 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper, Woods, Woodward | 43 min |
| Jun 24, 11:01 PM CDT | Special Weather Statement | OUN | Ellis | 29 min |
| Jun 24, 11:11 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper, Roger Mills, Woods, Woodward | 49 min |
| Jun 24, 11:54 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Custer, Dewey, Ellis, Harper, Major and 3 more | 51 min |
| Jun 25, 12:37 AM CDT | Special Weather Statement | OUN | Roger Mills | 38 min |
| Jun 25, 12:41 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Blaine, Caddo, Canadian, Custer, Dewey and 6 more | 49 min |
| Jun 25, 12:45 AM CDT | Severe Thunderstorm Warning | OUN | Beckham, Custer, Greer, Kiowa, Roger Mills, Washita | 45 min |
| Jun 25, 1:24 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Canadian, Cleveland, Garfield, Grady and 8 more | 51 min |
| Jun 25, 1:29 AM CDT | Severe Thunderstorm Warning | OUN | Beckham, Blaine, Caddo, Custer, Kiowa, Roger Mills and 1 more | 46 min |
| Jun 25, 1:31 AM CDT | Special Weather Statement | OUN | Beckham, Greer, Harmon, Jackson | 29 min |
| Jun 25, 1:56 AM CDT | Severe Thunderstorm Warning | OUN | Beckham, Blaine, Caddo, Comanche, Cotton, Custer and 8 more | 49 min |
| Jun 25, 2:05 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Canadian, Cleveland, Garfield, Garvin and 12 more | 40 min |
| Jun 25, 2:44 AM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Cleveland, Garvin, Grady, Lincoln and 7 more | 46 min |
| Jun 25, 2:47 AM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche, Cotton, Grady, Greer, Harmon and 6 more | 43 min |
| Jun 25, 3:29 AM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Lincoln, Oklahoma, Pottawatomie, Seminole | 46 min |
| Jun 25, 3:41 AM CDT | Severe Thunderstorm Warning | OUN | Cleveland, Garvin, McClain, Murray, Pontotoc, Pottawatomie and 1 more | 49 min |
| Jun 25, 4:19 AM CDT | Special Weather Statement | OUN | Carter, Jefferson, Johnston, Love, Marshall, Murray | 41 min |
| Jun 25, 4:34 AM CDT | Special Weather Statement | OUN | Coal, Hughes, Pontotoc, Seminole | 26 min |
| Jun 25, 4:56 AM CDT | Areal Flood Advisory | OUN | Comanche, Cotton, Tillman | 3 hr |
| Jun 25, 6:44 AM CDT | River Flood Warning | OUN | Major, Woods, Woodward | 45 hr |
| Jun 25, 6:46 AM CDT | River Flood Warning | OUN | Dewey, Major, Woodward | 26 hr |
| Jun 25, 7:22 AM CDT | Special Weather Statement | OUN | Caddo, Kiowa | 53 min |
| Jun 25, 8:30 AM CDT | River Flood Warning | OUN | Kingfisher, Logan | 49 hr |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2018Severe Thunderstorm Warnings in Texas, 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.