Alert archive / Oklahoma / Flash Flood Warnings in 2019
Flash Flood Warning 143, NWS Norman, OK
NWS Norman, OK issued this flash flood warning at Aug 30, 2019, 11:48 AM CDT for Jefferson County, Oklahoma. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 30, 2019, 11:48 AM CDT (16:48 UTC)
- Expired
- Aug 30, 2019, 2:45 PM CDT
- In force
- 3 hr
- Issued by
- NWS Norman, OK
- Area
- Storm-based polygon
- Flood severity
- None
County Jefferson County, OK
The radar
The Altus AFB radar (KFDR), 109 km from the middle of the area, began a volume at 16:52 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 4.8 hours before the alert went out and 375 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
- 313 J/kg
- Mixed-layer CIN
- -280 J/kg
- Mixed-layer LCL
- 2283 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- -38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Aug 30, 11:39 AM CDT, 9 minutes earlier.
Area forecast discussion, Aug 30, 11:39 AM CDT, 9 minutes before
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</html>Hazardous weather outlook, Aug 30, 7:49 AM CDT, 3 hours 59 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Norman OK 749 AM CDT Fri Aug 30 2019 OKZ004>048-050>052-TXZ083>090-311300- 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- 749 AM CDT Fri Aug 30 2019 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...Today and Tonight... .Thunderstorms... Showers and thunderstorms will continue to move across the area this morning into potentially early afternoon. Some of the storms could become strong to severe with strong wind gusts and hail the main concerns. Another round of storms will be possible later this evening into early Saturday. Some of the storms could become strong to severe with strong winds and hail the main concerns. .Heavy Rain... Locally heavy rain that could produce flooding and/or flash flooding will be possible through early Saturday. .DAYS TWO THROUGH SEVEN...Saturday through Thursday... .Thunderstorms... Scattered, non-severe thunderstorms are expected Saturday over most of Oklahoma. Thunderstorm chances end early Sunday. 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, Aug 30, 11:06 AM CDT, 42 minutes before
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</html>Special weather statement, Aug 30, 11:24 AM CDT, 24 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE Norman OK 1124 AM CDT Fri Aug 30 2019 OKZ014-016-021-022-301700- Washita OK-Roger Mills OK-Beckham OK-Custer OK- 1124 AM CDT Fri Aug 30 2019 ...SIGNIFICANT WEATHER ADVISORY FOR northwestern Washita... southeastern Roger Mills...northeastern Beckham and southwestern Custer Counties Until noon CDT... AT 1121 AM CDT, strong thunderstorms were along a line extending from 8 miles northwest of Elk City to near Dill City. These storms were nearly stationary. HAZARDS INCLUDE... Hail up to the size of nickels... Wind gusts to 50 MPH... Locations impacted include... Elk City, Burns Flat, Dill City, Canute and Foss. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor the weather situation closely and be alert for threatening weather conditions. && LAT...LON 3541 9956 3525 9905 3547 9908 3555 9959 TIME...MOT...LOC 1621Z 308DEG 1KT 3548 9954 3532 9912 Mahale
Special weather statement, Aug 30, 11:40 AM CDT, 8 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 |
|---|---|---|---|---|
| Aug 29, 11:48 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods | 42 min |
| Aug 30, 12:29 AM CDT | Special Weather Statement | OUN | Alfalfa | 46 min |
| Aug 30, 12:35 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Grant, Woods | 40 min |
| Aug 30, 12:35 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Grant, Woods | 40 min |
| Aug 30, 1:17 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Garfield, Grant | 5 min |
| Aug 30, 1:20 AM CDT | Special Weather Statement | OUN | Kay | 40 min |
| Aug 30, 1:24 AM CDT | Special Weather Statement | OUN | Alfalfa | 36 min |
| Aug 30, 1:49 AM CDT | Special Weather Statement | OUN | Garfield | 41 min |
| Aug 30, 2:07 AM CDT | Special Weather Statement | OUN | Kay | 23 min |
| Aug 30, 2:18 AM CDT | Special Weather Statement | OUN | Kay | 27 min |
| Aug 30, 2:19 AM CDT | Severe Thunderstorm Warning | OUN | Kay, Noble | 41 min |
| Aug 30, 3:09 AM CDT | Special Weather Statement | OUN | Noble | 51 min |
| Aug 30, 3:46 AM CDT | Areal Flood Advisory | OUN | Kay, Noble, Payne | 3 hr |
| Aug 30, 4:00 AM CDT | Special Weather Statement | OUN | Lincoln, Payne | 30 min |
| Aug 30, 4:08 AM CDT | Special Weather Statement | OUN | Blaine | 37 min |
| Aug 30, 4:55 AM CDT | Special Weather Statement | OUN | Okfuskee | 50 min |
| Aug 30, 5:20 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Dewey | 40 min |
| Aug 30, 5:48 AM CDT | Special Weather Statement | OUN | Cleveland, Pottawatomie | 27 min |
| Aug 30, 5:50 AM CDT | Areal Flood Advisory | OUN | Custer, Kiowa, Washita | 3 hr |
| Aug 30, 5:56 AM CDT | Areal Flood Advisory | OUN | Cleveland, Lincoln, Oklahoma, Pottawatomie, Seminole | 3 hr |
| Aug 30, 6:12 AM CDT | Areal Flood Advisory | OUN | Alfalfa, Garfield, Grant, Major, Woods | 3 hr |
| Aug 30, 6:26 AM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Custer, Dewey | 49 min |
| Aug 30, 6:30 AM CDT | Special Weather Statement | OUN | Major, Woodward | 30 min |
| Aug 30, 6:52 AM CDT | Flash Flood Warning | OUN | Washita | 3 hr |
| Aug 30, 7:13 AM CDT | Areal Flood Advisory | OUN | Hughes, Pottawatomie, Seminole | 3 hr |
| Aug 30, 7:16 AM CDT | Areal Flood Advisory | OUN | Blaine, Custer, Dewey, Major, Woodward | 3 hr |
| Aug 30, 7:23 AM CDT | Severe Thunderstorm Warning | OUN | Dewey | 39 min |
| Aug 30, 7:25 AM CDT | Areal Flood Advisory | OUN | Lincoln, Logan, Noble, Payne | 3 hr |
| Aug 30, 7:39 AM CDT | Flash Flood Warning | OUN | Lincoln, Logan, Noble, Payne | 3 hr |
| Aug 30, 7:47 AM CDT | Severe Thunderstorm Warning | OUN | Beckham, Roger Mills | 43 min |
| Aug 30, 8:00 AM CDT | Areal Flood Advisory | OUN | Jefferson | 3 hr |
| Aug 30, 8:17 AM CDT | Special Weather Statement | OUN | Custer | 28 min |
| Aug 30, 8:22 AM CDT | Flash Flood Warning | OUN | Blaine, Caddo, Custer, Dewey, Washita | 3 hr |
| Aug 30, 8:30 AM CDT | Special Weather Statement | OUN | Lincoln | 30 min |
| Aug 30, 8:32 AM CDT | Areal Flood Advisory | OUN | Beckham, Roger Mills | 3 hr |
| Aug 30, 8:35 AM CDT | Special Weather Statement | OUN | Beckham | 25 min |
| Aug 30, 8:37 AM CDT | Special Weather Statement | OUN | Cleveland | 23 min |
| Aug 30, 8:39 AM CDT | Special Weather Statement | OUN | Washita | 36 min |
| Aug 30, 8:42 AM CDT | Areal Flood Advisory | OUN | Lincoln, Logan, Oklahoma, Pottawatomie | 3 hr |
| Aug 30, 8:53 AM CDT | Severe Thunderstorm Warning | OUN | Kiowa, Washita | 52 min |
| Aug 30, 8:59 AM CDT | Special Weather Statement | OUN | Cleveland | 31 min |
| Aug 30, 9:08 AM CDT | Special Weather Statement | OUN | Beckham | 37 min |
| Aug 30, 9:11 AM CDT | Special Weather Statement | OUN | Kiowa | 34 min |
| Aug 30, 9:12 AM CDT | Areal Flood Advisory | OUN | Cleveland, Oklahoma | 3 hr |
| Aug 30, 9:16 AM CDT | Flash Flood Warning | OUN | Caddo, Kiowa, Washita | 3 hr |
| Aug 30, 9:24 AM CDT | Special Weather Statement | OUN | Harmon, Jackson | 36 min |
| Aug 30, 9:32 AM CDT | Special Weather Statement | OUN | Cleveland, McClain, Pottawatomie | 28 min |
| Aug 30, 9:42 AM CDT | Special Weather Statement | OUN | Beckham | 48 min |
| Aug 30, 9:44 AM CDT | Areal Flood Advisory | OUN | Grady, McClain | 3 hr |
| Aug 30, 9:48 AM CDT | Special Weather Statement | OUN | McClain, Pottawatomie | 27 min |
| Aug 30, 9:51 AM CDT | Flash Flood Warning | OUN | Cleveland, Pottawatomie | 3 hr |
| Aug 30, 10:00 AM CDT | Areal Flood Advisory | OUN | Garvin, McClain, Murray, Pontotoc | 3 hr |
| Aug 30, 10:13 AM CDT | Special Weather Statement | OUN | Garvin, McClain, Pottawatomie | 32 min |
| Aug 30, 10:33 AM CDT | Areal Flood Advisory | OUN | Garvin, Grady, McClain, Stephens | 3 hr |
| Aug 30, 10:40 AM CDT | Areal Flood Advisory | OUN | Comanche | 3 hr |
| Aug 30, 10:42 AM CDT | Special Weather Statement | OUN | Cotton, Stephens | 33 min |
| Aug 30, 10:47 AM CDT | Areal Flood Warning | OUN | Lincoln, Logan, Noble, Payne | 4 hr |
| Aug 30, 11:12 AM CDT | Areal Flood Advisory | OUN | Carter, Johnston, Love, Marshall, Murray | 3 hr |
| Aug 30, 11:14 AM CDT | Special Weather Statement | OUN | Cotton, Stephens | 31 min |
| Aug 30, 11:16 AM CDT | Areal Flood Warning | OUN | Blaine, Caddo, Custer, Dewey, Washita | 4 hr |
| Aug 30, 11:22 AM CDT | Special Weather Statement | OUN | Love | 23 min |
| Aug 30, 11:24 AM CDT | Special Weather Statement | OUN | Washita | 36 min |
| Aug 30, 11:25 AM CDT | Areal Flood Advisory | OUN | Jefferson | 3 hr |
| Aug 30, 11:40 AM CDT | Special Weather Statement | OUN | Jefferson | 50 min |
| Aug 30, 11:55 AM CDT | Special Weather Statement | OUN | Comanche, Cotton, Jackson, Stephens, Tillman | 65 min |
| Aug 30, 11:56 AM CDT | Areal Flood Advisory | OUN | Beckham, Roger Mills, Washita | 3 hr |
| Aug 30, 11:58 AM CDT | Special Weather Statement | OUN | Beckham | 62 min |
| Aug 30, 12:10 PM CDT | Areal Flood Warning | OUN | Caddo, Kiowa, Washita | 4 hr |
| Aug 30, 12:15 PM CDT | Areal Flood Advisory | OUN | Bryan, Johnston, Marshall | 3 hr |
| Aug 30, 12:33 PM CDT | Special Weather Statement | OUN | Beckham | 27 min |
| Aug 30, 2:19 PM CDT | River Flood Warning | OUN | Pottawatomie, Seminole | 19 hr |
| Aug 29, 7:15 PM CDT | Special Weather Statement | OUN | Wilbarger | 30 min |
| Aug 30, 12:12 PM CDT | Special Weather Statement | OUN | Archer | 33 min |
| Aug 30, 12:34 PM CDT | Special Weather Statement | OUN | Baylor | 26 min |
Nearby
Flash Flood Warnings in Oklahoma, 2019Every flash flood warning in 2019
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.