Alert archive / Oklahoma / Special Weather Statements in 2020
Special Weather Statement, NWS Norman, OK
NWS Norman, OK issued this special weather statement at Aug 11, 2020, 12:21 AM CDT for Kay County, Noble County, Oklahoma. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 11, 2020, 12:21 AM CDT (05:21 UTC)
- Expired
- Aug 11, 2020, 1:00 AM CDT
- In force
- 39 min
- Issued by
- NWS Norman, OK
Counties Kay County, OK, Noble County, OK
The radar
The Vance AFB radar (KVNX), 103 km from the middle of the area, began a volume at 05:20 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
Dodge City, (KDDC), launched 00:00Z, 5.4 hours before the alert went out and 290 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
- 154 J/kg
- Mixed-layer CIN
- -362 J/kg
- Mixed-layer LCL
- 2311 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 10, 6:32 PM CDT, 5 hours 49 minutes earlier.
Area forecast discussion, Aug 10, 6:32 PM CDT, 5 hours 49 minutes before
Area Forecast Discussion National Weather Service Norman OK 632 PM CDT Mon Aug 10 2020 ...New AVIATION... .SHORT TERM... (This evening through Tuesday) Issued at 140 PM CDT Mon Aug 10 2020 Isolate showers and thunderstorms will persist across northern reaches of Oklahoma this afternoon in the hot and very humid airmass. Aloft, a weak mid-level wave will approach KS and northern Oklahoma later today and provide more support for showers/storms this evening and overnight. A dry line over the western panhandles this afternoon will initiate more storms as it moves east into the central panhandles by early evening. Some of these storms are expected to move into western and northern Oklahoma this evening and continue across at least the north into early Tuesday. By this time, the upper trough will move across northern Oklahoma and keep scattered showers and clouds around east of I-35 into Tuesday afternoon. && .LONG TERM... (Tuesday night through next Sunday) Issued at 243 PM CDT Mon Aug 10 2020 The upper-level ridge over the desert Southwest will remain the main feature affecting our weather through the period. After the upper-level wave from tonight/tomorrow moves off to the southeast, there is little in the way of disturbances in the flow until at least the weekend. Around that time, the upper high shifts north into Utah and vicinity, altering the northwest flow to more northerly flow across the southern Plains. This will, assuming it happens, help bring somewhat cooler air into the region this weekend. It may also bring more widespread chances for rain. && .AVIATION... (00Z TAFS) Issued at 624 PM CDT Mon Aug 10 2020 Thunderstorms have erupted near a weak surface boundary near the Oklahoma/Kansas border, aided by an upper-level wave. As the wave departs to the southeast, and nighttime cooling commences, the storms are expected to diminish. However, there is great uncertainty regarding whether or not (and where) storms may form on surface outflow boundaries during the night...and into Tuesday morning. We have included VCTS for KWWR and KPNC this evening, as storms should be near those airports for another couple of hours or so, but otherwise have not mentioned TS because of the low probability. Otherwise, expect mainly south winds and VFR conditions. CmS && .PRELIMINARY POINT TEMPS/POPS... Oklahoma City OK 76 96 75 96 / 20 20 10 10 Hobart OK 75 99 75 100 / 30 10 10 0 Wichita Falls TX 78 99 77 100 / 0 10 0 0 Gage OK 67 98 71 101 / 50 10 20 10 Ponca City OK 73 94 73 93 / 50 30 20 20 Durant OK 77 98 76 98 / 10 10 10 10 && .OUN WATCHES/WARNINGS/ADVISORIES... OK...None. TX...None. && SHORT TERM...09 LONG TERM....23 AVIATION...23
Hazardous weather outlook, Aug 10, 11:03 PM CDT, 1 hour 18 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Norman OK 1103 PM CDT Mon Aug 10 2020 OKZ004>048-050>052-TXZ083>090-120415- 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- 1103 PM CDT Mon Aug 10 2020 This hazardous weather outlook is for portions of northern... western...central...and southern Oklahoma...and western north Texas. .DAY ONE...Tonight... .Thunderstorms... Strong to severe storms will be possible through late tonight across portions of central and southern Oklahoma, and perhaps portions of north Texas. Damaging wind gusts, small hail, and heavy rain that could lead to flooding are the main concerns. Showers and thunderstorms will remain possible over much of the area through early Tuesday morning but the potential for severe storms will diminish by 2 AM. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday... .Thunderstorms... Low chances for thunderstorms will continue most days through the weekend. 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 10, 11:35 PM CDT, 46 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 10, 7:12 PM CDT | Special Weather Statement | OUN | Woods | 33 min |
| Aug 10, 7:14 PM CDT | Special Weather Statement | OUN | Harper | 31 min |
| Aug 10, 7:16 PM CDT | Areal Flood Advisory | OUN | Harper | 3 hr |
| Aug 10, 7:30 PM CDT | Areal Flood Advisory | OUN | Harper | 3 hr |
| Aug 10, 7:37 PM CDT | Special Weather Statement | OUN | Harper | 38 min |
| Aug 10, 7:38 PM CDT | Special Weather Statement | OUN | Woods | 52 min |
| Aug 10, 7:47 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods | 43 min |
| Aug 10, 7:57 PM CDT | Special Weather Statement | OUN | Ellis | 33 min |
| Aug 10, 8:09 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Woodward | 51 min |
| Aug 10, 8:30 PM CDT | Special Weather Statement | OUN | Alfalfa, Grant | 45 min |
| Aug 10, 8:44 PM CDT | Severe Thunderstorm Warning | OUN | Dewey, Ellis, Roger Mills, Woodward | 61 min |
| Aug 10, 8:54 PM CDT | Tornado Warning | OUN | Woodward | 9 min |
| Aug 10, 9:25 PM CDT | Special Weather Statement | OUN | Garfield | 35 min |
| Aug 10, 9:29 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Custer, Dewey, Major, Woodward | 46 min |
| Aug 10, 9:33 PM CDT | Special Weather Statement | OUN | Greer, Harmon | 27 min |
| Aug 10, 9:38 PM CDT | Severe Thunderstorm Warning | OUN | Beckham, Custer, Greer, Harmon, Jackson, Kiowa and 2 more | 52 min |
| Aug 10, 10:04 PM CDT | Severe Thunderstorm Warning | OUN | Greer, Jackson, Kiowa, Washita | 41 min |
| Aug 10, 10:16 PM CDT | Special Weather Statement | OUN | Blaine, Custer, Kingfisher | 44 min |
| Aug 10, 10:36 PM CDT | Special Weather Statement | OUN | Dewey | 39 min |
| Aug 10, 10:40 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche, Cotton, Jackson, Kiowa, Tillman and 1 more | 50 min |
| Aug 10, 10:44 PM CDT | Special Weather Statement | OUN | Canadian, Kingfisher, Logan | 46 min |
| Aug 10, 10:56 PM CDT | Severe Thunderstorm Warning | OUN | Canadian, Kingfisher, Logan, Oklahoma | 49 min |
| Aug 10, 11:21 PM CDT | Special Weather Statement | OUN | Garfield, Grant, Kay, Noble, Payne | 69 min |
| Aug 10, 11:24 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche, Cotton, Grady, Stephens, Tillman | 51 min |
| Aug 10, 11:34 PM CDT | Special Weather Statement | OUN | Cleveland, Lincoln, McClain, Oklahoma, Pottawatomie | 56 min |
| Aug 10, 11:46 PM CDT | Special Weather Statement | OUN | Canadian, Logan | 59 min |
| Aug 11, 12:00 AM CDT | Severe Thunderstorm Warning | OUN | Canadian, Cleveland, Grady, Kingfisher, Logan, McClain and 1 more | 50 min |
| Aug 11, 12:09 AM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Garvin, Grady, Jefferson, McClain and 1 more | 51 min |
| Aug 11, 12:23 AM CDT | Special Weather Statement | OUN | Greer, Kiowa | 82 min |
| Aug 11, 12:29 AM CDT | Areal Flood Advisory | OUN | Canadian, Cleveland, Grady, Kingfisher, Logan, McClain and 1 more | 3 hr |
| Aug 11, 12:36 AM CDT | Special Weather Statement | OUN | Cleveland, McClain, Pottawatomie, Seminole | 54 min |
| Aug 11, 12:44 AM CDT | Special Weather Statement | OUN | Lincoln, Payne | 61 min |
| Aug 11, 1:02 AM CDT | Special Weather Statement | OUN | Cotton, Garvin, Jefferson, Stephens | 43 min |
| Aug 11, 1:29 AM CDT | Special Weather Statement | OUN | Grady | 46 min |
| Aug 11, 2:04 AM CDT | Special Weather Statement | OUN | Comanche | 41 min |
| Aug 11, 3:24 AM CDT | Special Weather Statement | OUN | Garvin | 36 min |
| Aug 11, 4:35 AM CDT | Special Weather Statement | OUN | Pontotoc | 25 min |
| Aug 11, 3:34 PM CDT | Special Weather Statement | OUN | Coal | 41 min |
| Aug 11, 3:36 PM CDT | Special Weather Statement | OUN | Coal | 39 min |
| Aug 11, 3:47 PM CDT | Severe Thunderstorm Warning | OUN | Coal, Hughes, Pontotoc | 43 min |
| Aug 11, 3:57 PM CDT | Special Weather Statement | OUN | Hughes | 33 min |
| Aug 11, 4:04 PM CDT | Severe Thunderstorm Warning | OUN | Coal, Hughes | 41 min |
| Aug 11, 4:21 PM CDT | Special Weather Statement | OUN | Coal | 39 min |
| Aug 11, 4:23 PM CDT | Special Weather Statement | OUN | Coal | 52 min |
| Aug 11, 4:37 PM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal | 38 min |
| Aug 11, 5:15 PM CDT | Special Weather Statement | OUN | Atoka | 30 min |
| Aug 11, 5:46 PM CDT | Special Weather Statement | OUN | Atoka | 29 min |
| Aug 11, 5:53 PM CDT | Areal Flood Advisory | OUN | Atoka | 3 hr |
| Aug 11, 6:17 PM CDT | Special Weather Statement | OUN | Bryan | 43 min |
| Aug 11, 6:24 PM CDT | Severe Thunderstorm Warning | OUN | Bryan | 36 min |
| Aug 11, 6:32 PM CDT | Special Weather Statement | OUN | Bryan | 28 min |
| Aug 11, 6:53 PM CDT | Special Weather Statement | OUN | Atoka | 52 min |
| Aug 11, 1:07 AM CDT | Special Weather Statement | OUN | Baylor, Foard, Knox | 53 min |
Nearby
Special Weather Statements in Oklahoma, 2020Every special weather statement in 2020
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.