Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 277, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 21, 2023, 5:09 AM CDT for 4 counties in Oklahoma. It was in force for 51 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
- Jul 21, 2023, 5:09 AM CDT (10:09 UTC)
- Expired
- Jul 21, 2023, 6:00 AM CDT
- In force
- 51 min
- Issued by
- NWS Tulsa, OK
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Creek County, OK, Osage County, OK, Pawnee County, OK, Tulsa County, OK
The radar
The Tulsa radar (KINX), 71 km from the middle of the area, began a volume at 10:13 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 21, 4:44 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 10.2 hours before the alert went out and 148 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
- 1495 J/kg
- Mixed-layer CIN
- -206 J/kg
- Mixed-layer LCL
- 1827 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
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 Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 21, 2:47 AM CDT, 2 hours 22 minutes earlier.
Area forecast discussion, Jul 21, 2:47 AM CDT, 2 hours 22 minutes before
Area Forecast Discussion National Weather Service Tulsa OK 247 AM CDT Fri Jul 21 2023 ...New SHORT TERM, LONG TERM... .SHORT TERM... (Today) Issued at 246 AM CDT Fri Jul 21 2023 A compact, but well organized MCS extends from far SW KS into NW OK early this morning. Some recent runs of the HRRR show this system bowing into and thru NE OK and NW AR between 12 and 18Z. Pockets of damaging wind are certainly possible, and an isolated short-lived tornado is also possible on the leading edge near any bowed out line segment. Locally heavy rainfall is also expected given high PWAT/rain efficiency, though totals should be limited by the progressive nature of the system. Outflow from the system should keep all areas out of advisory type heat today, though it may be close down near the Red River. Lacy && .LONG TERM... (Tonight through Thursday) Issued at 246 AM CDT Fri Jul 21 2023 The NAM and EC develop showers and storms tonight from east- central and southeast OK into west-central AR, possibly near an H85 front. Several CAMs show this signal as well, except for the HRRR. PoPs for the overnight were raised from previous forecast. Some strong NWrly flow aloft develops over the Plains this weekend. A shortwave trough traversing this flow could bring isolated storm chances near the KS/MO borders late Saturday night into Sunday and again Sunday afternoon in the same location in association with another weak wave/front. After that, mid level heights rise as the ridge builds east in our direction. Several days of hot and dry weather are expected next week, with some locations getting close to advisory level heat. The summer of 2023 rolls on. Lacy && .AVIATION... (06Z TAFS) Issued at 1250 AM CDT Fri Jul 21 2023 Isolated showers/storms will remain possible tonight across Northeast Oklahoma and Northwest Arkansas ahead of the main MCS that is expected to move into the CWA early Friday morning. This complex of storms looks to move across Northeast Oklahoma and Northwest Arkansas through the morning hours and will continue Tempo groups for timing of greater potential. Gusty winds...heavy rainfall and brief MVFR conditions will be possible within the stronger convection. Behind the main area of storms...additional scattered showers/storms looks to be possible for a short period before the storm system exits off to the east Friday afternoon. Scattered to overcast mid and high clouds are forecast through mainly Friday afternoon along with the potential for a period of MVFR ceilings Friday morning. By Friday evening...few to scattered high clouds are forecast over the CWA. Winds through the period become north to northeasterly from north to south as the surface frontal boundary pushes over the CWA. && .PRELIMINARY POINT TEMPS/POPS... TUL 81 64 89 67 / 90 10 0 10 FSM 89 68 90 68 / 70 40 10 0 MLC 88 67 88 65 / 40 30 10 0 BVO 79 60 88 63 / 80 10 0 20 FYV 81 60 86 62 / 80 30 0 20 BYV 79 60 87 63 / 80 30 0 20 MKO 82 64 87 65 / 70 20 0 10 MIO 79 60 88 64 / 60 10 0 20 F10 82 64 87 64 / 70 20 0 0 HHW 94 71 89 66 / 10 20 10 0 && .TSA WATCHES/WARNINGS/ADVISORIES... OK...None. AR...None. && SHORT TERM...30 LONG TERM....30 AVIATION...20
Hazardous weather outlook, Jul 20, 9:11 PM CDT, 7 hours 58 minutes before
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</html>The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 4:38 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Pawnee | 52 min |
| Jul 21, 5:30 AM CDT | Special Weather Statement | TSA | Osage | 30 min |
| Jul 21, 5:37 AM CDT | Severe Thunderstorm Warning | TSA | Osage | 53 min |
| Jul 21, 5:44 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Osage, Rogers, Tulsa, Wagoner, Washington | 46 min |
| Jul 21, 5:52 AM CDT | Severe Thunderstorm Warning | TSA | Osage, Rogers, Tulsa | 40 min |
| Jul 21, 6:11 AM CDT | Special Weather Statement | TSA | Nowata, Washington | 49 min |
| Jul 21, 6:29 AM CDT | Special Weather Statement | TSA | Mayes, Rogers, Wagoner | 46 min |
| Jul 21, 6:42 AM CDT | Special Weather Statement | TSA | Craig, Nowata, Washington | 48 min |
| Jul 21, 6:47 AM CDT | Special Weather Statement | TSA | Cherokee, Delaware, Mayes, Wagoner | 43 min |
| Jul 21, 6:56 AM CDT | Severe Thunderstorm Warning | TSA | Cherokee, Wagoner | 49 min |
| Jul 21, 7:19 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Delaware | 56 min |
| Jul 21, 7:23 AM CDT | Special Weather Statement | TSA | Delaware, Ottawa | 52 min |
| Jul 21, 7:31 AM CDT | Special Weather Statement | TSA | Adair | 44 min |
| Jul 21, 7:36 AM CDT | Special Weather Statement | TSA | Franklin | 39 min |
| Jul 21, 8:00 AM CDT | Special Weather Statement | TSA | Benton | 60 min |
| Jul 21, 8:19 AM CDT | Special Weather Statement | TSA | Crawford, Franklin, Washington | 56 min |
| Jul 21, 8:31 AM CDT | Areal Flood Advisory | TSA | Crawford, Franklin | 119 min |
| Jul 21, 8:36 AM CDT | Special Weather Statement | TSA | Carroll, Madison | 54 min |
| Jul 21, 8:38 AM CDT | Areal Flood Advisory | TSA | Franklin | 2 hr |
| Jul 21, 9:17 AM CDT | Special Weather Statement | TSA | Madison | 28 min |
| Jul 21, 9:32 AM CDT | Special Weather Statement | TSA | Carroll | 28 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2023Every severe thunderstorm warning in 2023
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.