Alert archive / Texas / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 859, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Sep 19, 2017, 6:40 PM CDT for Archer County, Clay County, Texas. It was in force for 50 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
- Sep 19, 2017, 6:40 PM CDT (23:40 UTC)
- Expired
- Sep 19, 2017, 7:30 PM CDT
- In force
- 50 min
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 60.0 mph
Counties Archer County, TX, Clay County, TX
The radar
The Altus AFB radar (KFDR), 88 km from the middle of the area, began a volume at 23:40 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 12:00Z, 11.7 hours before the alert went out and 145 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
- 1887 J/kg
- Mixed-layer CIN
- -115 J/kg
- Mixed-layer LCL
- 1008 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- -1 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 Sep 19, 6:27 PM CDT, 13 minutes earlier.
Area forecast discussion, Sep 19, 6:27 PM CDT, 13 minutes before
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</html>Hazardous weather outlook, Sep 19, 11:46 AM CDT, 6 hours 54 minutes before
Hazardous Weather Outlook National Weather Service Norman OK 1146 AM CDT Tue Sep 19 2017 OKZ004>048-050>052-TXZ083>090-201700- 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 Tue Sep 19 2017 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...Today and Tonight... .Thunderstorms... Scattered thunderstorms will be possible late this afternoon and evening across western north texas and southwest Oklahoma. A few strong to severe storms will be possible with hail up to the size of half dollars and 60 to 70 mph wind gusts. Brief heavy rainfall and frequent cloud to ground lightning will also accompany any of the storms. .Fire Weather... Near critical fire weather conditions will be possible across portions of western and northwestern Oklahoma this afternoon due to hot temperatures, strong, gusty south winds, and low relative humidity. .DAYS TWO THROUGH SEVEN...Wednesday through Monday... .Thunderstorms... An approaching storm system will bring increasing chances of thunderstorms Sunday and Monday. .Fire Weather... Elevated fire weather conditions will remain possible across portions of Oklahoma and north Texas Wednesday through Friday. Get graphics and more details at weather.gov/norman...and follow our weather forecast office on Twitter and Facebook. 30
In the hours before
Local storm report, Sep 19, 4:31 PM CDT, 2 hours 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
431 PM CDT TUE SEP 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0430 PM HAIL 1 N GRANDFIELD 34.25N 98.69W
09/19/2017 E0.75 INCH TILLMAN OK PUBLIC
&&
DWSpecial weather statement, Sep 19, 4:47 PM CDT, 1 hour 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 447 PM CDT TUE SEP 19 2017 OKZ044-TXZ086-090-192215- Cotton OK-Clay TX-Wichita TX- 447 PM CDT TUE SEP 19 2017 ...SIGNIFICANT WEATHER ADVISORY FOR southeastern Cotton... northwestern Clay and east central Wichita Counties Until 515 PM CDT... AT 445 PM CDT, a strong thunderstorm was located 5 miles northeast of Sheppard AFB, moving northeast at 15 MPH. HAZARDS INCLUDE... Hail up to the size of nickels... Wind gusts to 50 MPH... LAT...LON 3400 9840 3406 9855 3425 9849 3416 9821 TIME...MOT...LOC 2145Z 207DEG 15KT 3405 9846 ..speg.
Special weather statement, Sep 19, 5:08 PM CDT, 1 hour 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
508 PM CDT TUE SEP 19 2017
OKZ037-192245-
Tillman OK-
508 PM CDT TUE SEP 19 2017
...SIGNIFICANT WEATHER ADVISORY FOR southeastern Tillman County Until
545 PM CDT...
AT 507 PM CDT, a strong thunderstorm was located 5 miles southwest of
Loveland, moving northeast at 15 MPH.
HAZARDS INCLUDE...
Hail up to the size of nickels...
Wind gusts to 50 MPH...
LAT...LON 3428 9898 3451 9876 3442 9866 3434 9866
3433 9861 3428 9861 3416 9882 3416 9884
TIME...MOT...LOC 2207Z 226DEG 15KT 3427 9885
..speg.Local storm report, Sep 19, 5:27 PM CDT, 1 hour 13 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 |
|---|---|---|---|---|
| Sep 19, 3:47 AM CDT | Special Weather Statement | OUN | Garfield | 28 min |
| Sep 19, 4:03 AM CDT | Severe Thunderstorm Warning | OUN | Garfield, Noble | 42 min |
| Sep 19, 4:33 AM CDT | Special Weather Statement | OUN | Grant | 27 min |
| Sep 19, 5:01 AM CDT | Special Weather Statement | OUN | Grant | 29 min |
| Sep 19, 5:05 AM CDT | Severe Thunderstorm Warning | OUN | Grant | 24 min |
| Sep 19, 5:34 AM CDT | Special Weather Statement | OUN | Kay | 26 min |
| Sep 19, 6:00 AM CDT | Special Weather Statement | OUN | Kay | 30 min |
| Sep 19, 6:41 AM CDT | Special Weather Statement | OUN | Kay | 34 min |
| Sep 19, 3:22 PM CDT | Special Weather Statement | OUN | Cotton | 38 min |
| Sep 19, 3:29 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Tillman | 46 min |
| Sep 19, 4:16 PM CDT | Special Weather Statement | OUN | Cotton | 29 min |
| Sep 19, 4:47 PM CDT | Special Weather Statement | OUN | Cotton | 28 min |
| Sep 19, 5:08 PM CDT | Special Weather Statement | OUN | Tillman | 37 min |
| Sep 19, 5:24 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Tillman | 51 min |
| Sep 19, 2:56 PM CDT | Special Weather Statement | OUN | Wichita | 34 min |
| Sep 19, 3:02 PM CDT | Severe Thunderstorm Warning | OUN | Wichita | 43 min |
| Sep 19, 3:39 PM CDT | Severe Thunderstorm Warning | OUN | Wichita | 29 min |
| Sep 19, 4:01 PM CDT | Special Weather Statement | OUN | Wichita | 29 min |
| Sep 19, 4:25 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Wichita | 50 min |
| Sep 19, 5:13 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Clay, Wichita | 47 min |
| Sep 19, 5:16 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Baylor | 44 min |
| Sep 19, 5:20 PM CDT | Areal Flood Advisory | OUN | Archer, Wichita | 3 hr |
| Sep 19, 5:58 PM CDT | Severe Thunderstorm Warning | OUN | Archer | 25 min |
| Sep 19, 6:05 PM CDT | Special Weather Statement | OUN | Clay | 25 min |
| Sep 19, 6:12 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Clay | 25 min |
| Sep 19, 6:33 PM CDT | Special Weather Statement | OUN | Clay | 27 min |
Nearby
Severe Thunderstorm Warnings in Texas, 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.