Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 374, NWS Tulsa, OK

September 23, 2023Creek County, Pawnee County, Tulsa County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Sep 23, 2023, 6:10 PM CDT for Creek County, Pawnee County, Tulsa County, Oklahoma. It was in force for 38 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 23, 2023, 6:10 PM CDT (23:10 UTC)
Expired: Sep 23, 2023, 6:48 PM CDT
In force: 38 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Creek County, OK, Pawnee County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 70 km from the middle of the area, began a volume at 23:09 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
Sep 23, 4:03 PM CDT	Severe Thunderstorm Watch	SPC	10 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 11.2 hours before the alert went out and 243 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 360 J/kg
Mixed-layer CIN: -207 J/kg
Mixed-layer LCL: 1169 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 171 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.1

Open this sounding in Storm Lab

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 Sep 23, 4:33 PM CDT, 1 hour 37 minutes earlier.

Area forecast discussion, Sep 23, 4:33 PM CDT, 1 hour 37 minutes before

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Hazardous weather outlook, Sep 23, 5:47 PM CDT, 23 minutes before

Hazardous Weather Outlook
National Weather Service Tulsa OK
547 PM CDT Sat Sep 23 2023

ARZ001-002-010-011-019-020-029-OKZ049-053>076-241045-
Adair OK-Benton AR-Carroll AR-Cherokee OK-Choctaw OK-Craig OK-
Crawford AR-Creek OK-Delaware OK-Franklin AR-Haskell OK-Latimer OK-
Le Flore OK-Madison AR-Mayes OK-McIntosh OK-Muskogee OK-Nowata OK-
Okfuskee OK-Okmulgee OK-Osage OK-Ottawa OK-Pawnee OK-Pittsburg OK-
Pushmataha OK-Rogers OK-Sebastian AR-Sequoyah OK-Tulsa OK-Wagoner OK-
Washington OK-Washington AR-
547 PM CDT Sat Sep 23 2023

...Severe weather likely this evening with the threat for
flash flooding into the overnight hours...

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...Today and Tonight.
TORNADO.
	RISK...Elevated.
	AREA...Northeast Oklahoma.
    ONSET...early evening.

SEVERE THUNDERSTORM.
	RISK...Critical.
	AREA...Eastern Oklahoma and northwest Arkansas.
	ONSET...Ongoing.

	AREA AT GREATEST RISK...Northeast Oklahoma.

FLASH FLOOD.
	RISK...Elevated.
	AREA...Eastern Oklahoma and far northwest Arkansas.
	ONSET...Late evening.

HEAVY RAIN.
	RISK...Elevated.
	AREA...Eastern Oklahoma and far northwest Arkansas.
	ONSET...Ongoing.

DISCUSSION...
Widespread thunderstorms will develop along an advancing cold
front across northeast into central Oklahoma this evening. The
activity will move east into northwest Arkansas and the southeast
portion of Oklahoma by midnight. Sufficient instability and wind
shear will be present for all forms of severe weather with very
large hail being the most likely threat. A tornado or two will be
possible early this evening as more discrete storms form along the
front and southward along a pre-frontal trough. As the intense
complex of storms slowly moves east late this evening through the
early morning hours Sunday, the potential for damaging winds and flash
flooding will increase. Widespread rainfall amounts of 1 to 3
inches will be possible through Sunday morning with locally higher
totals approaching 5 inches possible.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Activation of the Regional Spotter Network Expected.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.
SUNDAY...Severe Thunderstorm Potential...Heavy Rain Potential.
MONDAY...Thunderstorm Potential.
TUESDAY THROUGH Friday...No Hazards.

EXTENDED DISCUSSION...
Additional strong to severe thunderstorms are expected to develop
along the frontal boundary across southeast Oklahoma into west-
central Arkansas during the afternoon Sunday. Large hail and
damaging winds will be the main threat with these storms however a
limited tornado threat will also exist. A flash flood watch may be
needed across southeast Oklahoma into west-central Arkansas
especially where new thunderstorms overlap areas that receive
excessive rain overnight. A few storms could linger into Monday
morning before quiet weather returns through the rest of the
extended forecast.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
Severe weather will increase from west to east this evening
including the potential for very heavy rainfall. The greatest risk
will be very large hail initially along with a tornado threat
especially with the more discrete cells that form along the
Interstate 44 corridor. Several clusters of severe storms are
expected to develop and move east and south across the remainder
of the area late this evening into the overnight hours Sunday. The
greatest risk of flash flooding will be where storms track across
areas that previously saw heavy rainfall.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, Sep 23, 5:02 PM CDT, 1 hour 8 minutes before

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Special weather statement, Sep 23, 5:07 PM CDT, 1 hour 3 minutes before

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Special weather statement, Sep 23, 5:15 PM CDT, 55 minutes before

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Special weather statement, Sep 23, 5:43 PM CDT, 27 minutes before

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Local storm report, Sep 23, 5:52 PM CDT, 18 minutes before

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Special weather statement, Sep 23, 6:09 PM CDT, 1 minute before

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The office that day

Everything else NWS Tulsa, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 23, 3:17 AM CDT	Flood Watch	TSA	Adair, Cherokee, Craig, Delaware, Haskell, Latimer and 13 more	27 hr
Sep 23, 2:23 PM CDT	Special Weather Statement	TSA	Creek	37 min
Sep 23, 2:33 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee	42 min
Sep 23, 2:59 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Okfuskee, Okmulgee	46 min
Sep 23, 3:42 PM CDT	Severe Thunderstorm Warning Destructive damage threat	TSA	McIntosh, Okfuskee, Okmulgee	48 min
Sep 23, 4:23 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	McIntosh, Pittsburg	52 min
Sep 23, 4:44 PM CDT	Areal Flood Advisory	TSA	McIntosh, Pittsburg	2 hr
Sep 23, 5:02 PM CDT	Special Weather Statement	TSA	Muskogee	43 min
Sep 23, 5:07 PM CDT	Special Weather Statement	TSA	Pittsburg	38 min
Sep 23, 5:15 PM CDT	Special Weather Statement	TSA	McIntosh	30 min
Sep 23, 5:15 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Haskell, Latimer, McIntosh, Pittsburg	27 min
Sep 23, 5:43 PM CDT	Special Weather Statement	TSA	McIntosh	32 min
Sep 23, 5:56 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	49 min
Sep 23, 6:09 PM CDT	Special Weather Statement	TSA	Creek	36 min
Sep 23, 6:15 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee	45 min
Sep 23, 6:29 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Osage, Pawnee	46 min
Sep 23, 6:42 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Haskell, Latimer, Pittsburg	14 min
Sep 23, 6:43 PM CDT	Special Weather Statement	TSA	Tulsa	32 min
Sep 23, 6:46 PM CDT	Special Weather Statement	TSA	Cherokee	29 min
Sep 23, 6:48 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Okmulgee	57 min
Sep 23, 6:50 PM CDT	Special Weather Statement	TSA	Osage	25 min
Sep 23, 6:54 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TSA	Okmulgee	51 min
Sep 23, 6:56 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa, Washington	49 min
Sep 23, 6:59 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	33 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2023 Every 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.