Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 538, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jun 24, 2017, 1:30 AM CDT for Jackson County, Oklahoma. It was in force for 30 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 24, 2017, 1:30 AM CDT (06:30 UTC)
- Expired
- Jun 24, 2017, 2:00 AM CDT
- In force
- 30 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 50.0 mph
County Jackson County, OK
The radar
The Altus AFB radar (KFDR), 47 km from the middle of the area, began a volume at 06:30 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
Fort Worth, TX (KFWD), launched 00:00Z, 6.5 hours before the alert went out and 277 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
- 2227 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 2004 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- 31 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 Jun 23, 5:52 PM CDT, 7 hours 38 minutes earlier.
Area forecast discussion, Jun 23, 5:52 PM CDT, 7 hours 38 minutes before
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</html>Hazardous weather outlook, Jun 23, 12:00 PM CDT, 13 hours 30 minutes before
Hazardous Weather Outlook National Weather Service Norman OK 1200 PM CDT Fri Jun 23 2017 OKZ004>048-050>052-TXZ083>090-241700- 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 Fri Jun 23 2017 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... There is a Slight Risk of severe storms this afternoon and this evening across portions of southeastern Oklahoma. Location... The Slight Risk area is near and southeast of a line from Ringling to Davis to Ada to Calvin. There is also a Marginal Risk for adjacent areas of north Texas and Oklahoma, generally southeast of a line from Benjamin to Burkburnett Texas, to Walters, Marlow, Norman and Stroud Oklahoma. Timing... Between 3 PM and 9 PM. Impacts... Winds of 70 mph and half dollar size hail. Discussion... Instability will increase across southeastern Oklahoma ahead of a cold front moving through the area. Scattered thunderstorms will likely develop near the cold front this afternoon and spread southeast as the front moves southeast. Instability this afternoon and early evening in southeast Oklahoma will be high enough for the potential of isolated severe thunderstorms. Wind shear is relatively weak, so individual severe thunderstorms are expected to be short-lived. The severe weather potential will diminish by mid evening as the front moves farther south into Texas. Scattered thunderstorms are also expected north of the cold front, persisting into the early morning hours Saturday. The severe weather potential of these storms will be low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday... .Thunderstorms... Thunderstorms will remain possible Saturday through early next week, especially across western Oklahoma. Strong gusty winds and heavy rain will be possible with the stronger storms. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 11:45 PM CDT | Special Weather Statement | OUN | Caddo | 30 min |
| Jun 24, 12:30 AM CDT | Special Weather Statement | OUN | Washita | 30 min |
| Jun 24, 12:41 AM CDT | Special Weather Statement | OUN | Jackson | 34 min |
| Jun 24, 12:44 AM CDT | Special Weather Statement | OUN | Greer | 31 min |
| Jun 24, 1:11 AM CDT | Special Weather Statement | OUN | Jackson | 34 min |
| Jun 24, 1:32 AM CDT | Special Weather Statement | OUN | Harmon | 28 min |
| Jun 24, 1:54 AM CDT | Special Weather Statement | OUN | Comanche | 36 min |
| Jun 24, 2:34 AM CDT | Special Weather Statement | OUN | Comanche | 26 min |
| Jun 24, 3:50 AM CDT | Special Weather Statement | OUN | Jefferson | 25 min |
| Jun 24, 3:21 AM CDT | Special Weather Statement | OUN | Clay | 24 min |
| Jun 24, 3:33 AM CDT | Special Weather Statement | OUN | Foard | 27 min |
| Jun 24, 4:06 AM CDT | Areal Flood Advisory | OUN | Clay | 3 hr |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2017Every severe thunderstorm warning in 2017
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.