Alert archive / Texas / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 159, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at May 15, 2018, 7:32 PM CDT for Baylor County, Texas. 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 15, 2018, 7:32 PM CDT (00:32 UTC)
- Expired
- May 15, 2018, 8:15 PM CDT
- In force
- 43 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 70.0 mph
County Baylor County, TX
The radar
The Altus AFB radar (KFDR), 86 km from the middle of the area, began a volume at 00:34 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, 0.5 hours before the alert went out and 244 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
- 82 J/kg
- Mixed-layer CIN
- -390 J/kg
- Mixed-layer LCL
- 1731 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 156 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 15, 6:09 PM CDT, 1 hour 23 minutes earlier.
Area forecast discussion, May 15, 6:09 PM CDT, 1 hour 23 minutes before
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</html>Hazardous weather outlook, May 15, 12:35 PM CDT, 6 hours 57 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Norman OK 1235 PM CDT Tue May 15 2018 OKZ004>048-050>052-TXZ083>090-161745- 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- 1235 PM CDT Tue May 15 2018 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...Today and Tonight... .Thunderstorms... There is a Slight Risk of severe thunderstorms across southwest Oklahoma and western north Texas. The Slight Risk is south and west of a line from Cheyenne to Altus to Seymour. Surrounding the Slight Risk is a Marginal Risk that extends as far north and east as a line from Woodward to Oklahoma City to Durant. Damaging wind gusts up to 70 mph and large hail up to the size of golfballs are possible this afternoon and evening in these risk areas. Discussion... Thunderstorms will continue across portions of the area this afternoon. The great risk of severe storms during the afternoon will be across southern Oklahoma and portions of north Texas. Renewed thunderstorm development late this afternoon and evening is expected in the Texas Panhandle later today. These storms may evolve into a line or cluster of storms that will move into southwest Oklahoma and western north Texas this evening. .Heavy Rainfall and Flash Flooding... Locally heavy rainfall of 1 to 3 inches in a short period of time from slow moving thunderstorms may cause flash flooding in a few locations across Oklahoma and western north Texas today and tonight. .DAYS TWO THROUGH SEVEN...Wednesday through Monday... .Thunderstorms... A few strong to severe thunderstorms are possible Wednesday through Friday. Western Oklahoma and western north Texas may have slightly higher chances for severe storms Wednesday through Friday during the nighttime hours. Additional strong to severe thunderstorms will likely return to parts of Oklahoma and north Texas late Saturday with the passage of a cold front. Thunderstorms may linger Sunday and Monday across parts of Oklahoma and north Texas. .Heavy Rainfall and Flash Flooding... Locally heavy rainfall of 1 to 2 inches in a short period of time from slow moving thunderstorms may cause flash flooding in a few locations across Oklahoma and north Texas on Wednesday as well as late Saturday. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook.
In the hours before
Special weather statement, May 15, 3:54 PM CDT, 3 hours 38 minutes before
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</html>Local storm report, May 15, 4:13 PM CDT, 3 hours 19 minutes before
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</html>Local storm report, May 15, 6:13 PM CDT, 1 hour 19 minutes before
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</html>Local storm report, May 15, 6:15 PM CDT, 1 hour 17 minutes before
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</html>Special weather statement, May 15, 7:04 PM CDT, 28 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 |
|---|---|---|---|---|
| May 15, 9:47 PM CDT | Special Weather Statement | OUN | Roger Mills | 28 min |
| May 15, 10:16 PM CDT | Special Weather Statement | OUN | Greer | 14 min |
| May 15, 10:23 PM CDT | Areal Flood Advisory | OUN | Harmon | 3 hr |
| May 15, 10:28 PM CDT | Special Weather Statement | OUN | Harmon | 17 min |
| May 15, 10:39 PM CDT | Severe Thunderstorm Warning | OUN | Greer, Kiowa | 36 min |
| May 15, 10:49 PM CDT | Severe Thunderstorm Warning | OUN | Jackson | 41 min |
| May 15, 10:57 PM CDT | Areal Flood Advisory | OUN | Jackson | 3 hr |
| May 15, 11:06 PM CDT | Special Weather Statement | OUN | Grady | 24 min |
| May 15, 11:10 PM CDT | Special Weather Statement | OUN | Washita | 20 min |
| May 15, 11:15 PM CDT | Severe Thunderstorm Warning | OUN | Washita | 30 min |
| May 15, 11:31 PM CDT | Special Weather Statement | OUN | Grady | 29 min |
| May 15, 11:32 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Kiowa, Tillman | 43 min |
| May 15, 11:47 PM CDT | Areal Flood Advisory | OUN | Kiowa | 3 hr |
| May 15, 11:54 PM CDT | Special Weather Statement | OUN | Roger Mills | 36 min |
| May 15, 11:56 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Kiowa, Washita | 28 min |
| May 16, 12:05 AM CDT | Special Weather Statement | OUN | Comanche | 25 min |
| May 16, 12:14 AM CDT | Special Weather Statement | OUN | Tillman | 31 min |
| May 16, 12:29 AM CDT | Special Weather Statement | OUN | Beckham, Roger Mills | 31 min |
| May 16, 12:31 AM CDT | Special Weather Statement | OUN | Comanche | 29 min |
| May 16, 2:26 AM CDT | Special Weather Statement | OUN | Oklahoma | 19 min |
| May 16, 2:43 AM CDT | Areal Flood Advisory | OUN | Oklahoma | 2 hr |
| May 16, 5:00 AM CDT | Areal Flood Advisory | OUN | Garfield | 2 hr |
| May 16, 4:49 PM CDT | Special Weather Statement | OUN | Kay | 26 min |
| May 16, 5:05 PM CDT | Special Weather Statement | OUN | Kay | 25 min |
| May 16, 5:20 PM CDT | Special Weather Statement | OUN | Noble | 25 min |
| May 16, 5:49 PM CDT | Special Weather Statement | OUN | Noble | 26 min |
| May 15, 7:04 PM CDT | Special Weather Statement | OUN | Baylor, Knox | 26 min |
| May 15, 8:17 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Knox | 43 min |
| May 15, 8:55 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Knox | 50 min |
| May 15, 8:59 PM CDT | Areal Flood Advisory | OUN | Baylor, Knox | 2 hr |
| May 15, 9:32 PM CDT | Special Weather Statement | OUN | Foard | 28 min |
| May 15, 10:13 PM CDT | Special Weather Statement | OUN | Wilbarger | 17 min |
| May 15, 10:30 PM CDT | Special Weather Statement | OUN | Hardeman | 30 min |
| May 15, 11:43 PM CDT | Special Weather Statement | OUN | Baylor, Wilbarger | 32 min |
| May 16, 12:11 AM CDT | Special Weather Statement | OUN | Clay | 34 min |
| May 16, 12:18 AM CDT | Special Weather Statement | OUN | Archer, Baylor, Wichita | 27 min |
Nearby
Severe 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.