Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 412, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jun 25, 2018, 1:24 AM CDT for 14 counties in Oklahoma. It was in force for 51 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, 1:24 AM CDT (06:24 UTC)
- Expired
- Jun 25, 2018, 2:15 AM CDT
- In force
- 51 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Kay County, OK, Kingfisher County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK
The radar
The Norman radar (KTLX), 73 km from the middle of the area, began a volume at 06:28 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 |
| Jun 25, 12:31 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 6.4 hours before the alert went out and 78 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, 12:56 AM CDT, 28 minutes earlier.
Area forecast discussion, Jun 25, 12:56 AM CDT, 28 minutes before
Area Forecast Discussion National Weather Service Norman OK 1256 AM CDT Mon Jun 25 2018 .AVIATION... MCS moving across northwestern Oklahoma will likely impact all TAFS sites through 12z Monday. Several reports across northwest Oklahoma of 65 to 75 mph winds from the north and northwest. Storms may weaken some as they move into central and southern Oklahoma, but still may see severe winds (50 knots) at PNC/OKC/OUN between 8-10z. Thunderstorms will lower visibility to around 1 mile with MVFR ceilings likely. Storms should be clear of all sites by 12-14Z. && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 72 95 78 100 / 50 10 0 0 Hobart OK 72 99 78 103 / 30 10 10 0 Wichita Falls TX 76 99 80 103 / 40 0 0 0 Gage OK 69 98 76 102 / 10 0 10 0 Ponca City OK 72 96 78 102 / 50 10 10 0 Durant OK 75 95 78 98 / 20 0 0 0 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. &&
Hazardous weather outlook, Jun 24, 10:34 PM CDT, 2 hours 50 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, 12:46 AM CDT, 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1246 AM CDT MON JUN 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1240 AM TSTM WND GST 3 N PUTNAM 35.90N 98.97W
06/25/2018 M73 MPH DEWEY OK MESONET
&&
SCLocal storm report, Jun 25, 12:52 AM CDT, 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1252 AM CDT MON JUN 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1245 AM TSTM WND GST 3 N PUTNAM 35.90N 98.97W
06/25/2018 M68 MPH DEWEY OK MESONET
&&
SCLocal storm report, Jun 25, 12:56 AM CDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1256 AM CDT MON JUN 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1250 AM TSTM WND GST 3 N PUTNAM 35.90N 98.97W
06/25/2018 M58 MPH DEWEY OK MESONET
&&
SCLocal storm report, Jun 25, 1:12 AM CDT, 12 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
112 AM CDT MON JUN 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0105 AM TSTM WND GST 7 W WATONGA 35.85N 98.54W
06/25/2018 M62 MPH BLAINE OK MESONET
&&
SCLocal storm report, Jun 25, 1:16 AM CDT, 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
116 AM CDT MON JUN 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0110 AM TSTM WND GST 7 W WATONGA 35.85N 98.54W
06/25/2018 M60 MPH BLAINE OK MESONET
&&
SCLocal storm report, Jun 25, 1:19 AM CDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
119 AM CDT MON JUN 25 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0115 AM TSTM WND GST 2 E WEATHERFORD 35.54N 98.65W
06/25/2018 M61 MPH CUSTER OK AWOS
&&
SCThe 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, 1:29 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, 3:31 AM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Jefferson, Stephens, Tillman | 44 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, 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.