Alert archive / Oklahoma / Special Weather Statements in 2019

Special Weather Statement, NWS Tulsa, OK

May 8, 2019Cherokee County, Muskogee County, Oklahoma

NWS Tulsa, OK issued this special weather statement at May 8, 2019, 4:02 AM CDT for Cherokee County, Muskogee County, Oklahoma. It was in force for 58 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
May 8, 2019, 4:02 AM CDT (09:02 UTC)
Expired
May 8, 2019, 5:00 AM CDT
In force
58 min
Issued by
NWS Tulsa, OK

Counties Cherokee County, OK, Muskogee County, OK

The radar

The Tulsa radar (KINX), 56 km from the middle of the area, began a volume at 09:05 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

Springfield, MO (KSGF), launched 00:00Z, 9.0 hours before the alert went out and 166 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2019-05-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 780 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2019-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 39 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
780 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
1305 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
39 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.6

Open this sounding in Storm Lab

The text

As transmitted.

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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 Tulsa, OK wrote its last area forecast discussion before this special weather statement went out at May 8, 2:54 AM CDT, 1 hour 8 minutes earlier.

Area forecast discussion, May 8, 2:54 AM CDT, 1 hour 8 minutes before
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Hazardous weather outlook, May 7, 11:19 PM CDT, 4 hours 43 minutes before
Hazardous Weather Outlook
National Weather Service Tulsa OK
1119 PM CDT Tue May 7 2019

ARZ001-002-010-011-019-020-029-OKZ049-053>076-081045-
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-
1119 PM CDT Tue May 7 2019

...SEVERE STORMS LIKELY TONIGHT...

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

.DAY ONE...Tonight.

TORNADO.
	RISK...Limited.
	AREA....Northeast Oklahoma, mainly west of highway 75.
	ONSET...Around Midnight.

SEVERE THUNDERSTORM.
	RISK...Limited.
	AREA...Eastern Oklahoma.
	ONSET...Around Midnight.

FLASH FLOOD.
	RISK...Limited.
	AREA...Northeast Oklahoma.
	ONSET...Around Midnight.

HEAVY RAIN.
	RISK...Elevated.
	AREA...Northeast Oklahoma.
	ONSET...Around Midnight.

DISCUSSION...
A line of severe thunderstorms is expected to move into eastern
Oklahoma between Midnight and 2 AM, then sweep through the area
through sunrise Wednesday morning. Low level wind shear ahead of
this line will be sufficient for brief spinup tornadoes, mainly to
the west of Highway 75 in northeast Oklahoma. The line should weaken
gradually as it moves toward western Arkansas, however the damaging
wind threat will persist over much of eastern Oklahoma.
Additionally, locally heavy rainfall will be possible and may lead
to flash flooding.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Local Spotter Activation May Be Needed.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
WEDNESDAY...Severe Thunderstorm Potential...High Wind Potential
         ...Heavy Rain Potential.
THURSDAY...No Hazards.
FRIDAY and SATURDAY...Thunderstorm Potential.
SUNDAY and MONDAY...No Hazards.

EXTENDED DISCUSSION...
A line of thunderstorms will continue to advance across southeast
Oklahoma and northwest Arkansas Wednesday morning. Damaging winds
are the primary threat, with an isolated short-lived tornado and
large hail possible.

At this time, severe weather potential appears increasingly
limited later Wednesday and Wednesday night. Surface instability
ahead of an advancing cold front will likely be hampered by
convection from earlier Wednesday. However, isolated severe
weather remains possible across northeast Oklahoma with Large hail
and damaging winds as the main threats. The stronger storms will
also be capable of producing locally heavy rainfall and flash
flooding. Storms will be exiting western Arkansas Thursday
morning as the cold front moves east.

Isolated thunderstorms are possible Saturday across southeast
Oklahoma and western Arkansas. Severe weather is not expected.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
Spotter network activation will likely be needed through the
morning Wednesday, and possibly again by late Wednesday afternoon.

weather.gov/tulsa contains additional information.

In the hours before

Special weather statement, May 8, 1:51 AM CDT, 2 hours 11 minutes before
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Special weather statement, May 8, 2:15 AM CDT, 1 hour 47 minutes before
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Special weather statement, May 8, 2:28 AM CDT, 1 hour 34 minutes before
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Special weather statement, May 8, 3:05 AM CDT, 57 minutes before
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Special weather statement, May 8, 3:16 AM CDT, 46 minutes before
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Special weather statement, May 8, 4:02 AM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 7, 10:09 PM CDTSpecial Weather StatementTSAPawnee36 min
May 7, 11:37 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee53 min
May 8, 12:11 AM CDTSevere Thunderstorm WarningTSAOsage, Pawnee64 min
May 8, 12:30 AM CDTSevere Thunderstorm WarningTSAOsage, Pawnee60 min
May 8, 1:04 AM CDTSevere Thunderstorm WarningTSAOsage, Pawnee56 min
May 8, 1:11 AM CDTSpecial Weather StatementTSACreek64 min
May 8, 1:51 AM CDTSpecial Weather StatementTSATulsa, Washington54 min
May 8, 2:15 AM CDTSpecial Weather StatementTSATulsa60 min
May 8, 2:28 AM CDTSpecial Weather StatementTSANowata, Rogers62 min
May 8, 3:05 AM CDTSpecial Weather StatementTSAWagoner55 min
May 8, 3:11 AM CDTAreal Flood AdvisoryTSACreek, Rogers, Tulsa, Wagoner3 hr
May 8, 3:16 AM CDTSpecial Weather StatementTSACraig, Delaware, Mayes, Ottawa59 min
May 8, 4:04 AM CDTSpecial Weather StatementTSADelaware, Ottawa41 min
May 8, 5:36 AM CDTSpecial Weather StatementTSAPittsburg39 min
May 8, 6:17 AM CDTAreal Flood AdvisoryTSAMayes, Rogers, Wagoner3 hr
May 8, 6:24 AM CDTSpecial Weather StatementTSAHaskell, Latimer, Pittsburg51 min
May 8, 6:57 AM CDTSpecial Weather StatementTSAAdair, Sequoyah48 min
May 8, 7:00 AM CDTSpecial Weather StatementTSAHaskell, Latimer, LeFlore45 min
May 8, 7:15 AM CDTAreal Flood AdvisoryTSACreek, Rogers, Tulsa, Wagoner3 hr
May 8, 7:30 AM CDTSpecial Weather StatementTSALeFlore45 min
May 8, 7:44 AM CDTAreal Flood AdvisoryTSACreek, Muskogee, Okfuskee, Okmulgee, Tulsa, Wagoner3 hr
May 8, 7:51 AM CDTAreal Flood AdvisoryTSAHaskell, McIntosh, Muskogee, Okfuskee, Okmulgee, Pittsburg3 hr
May 8, 7:58 AM CDTSpecial Weather StatementTSALeFlore47 min
May 8, 8:10 AM CDTRiver Flood WarningTSAOkmulgee7 days
May 8, 8:26 AM CDTRiver Flood WarningTSAOsage, Pawnee6 days
May 8, 9:17 AM CDTRiver Flood WarningTSACreek26 hr
May 8, 2:31 PM CDTRiver Flood WarningTSAMuskogee36 days
May 8, 7:28 AM CDTSpecial Weather StatementTSACrawford, Franklin47 min
May 8, 7:55 AM CDTSpecial Weather StatementTSACrawford, Franklin, Madison65 min

Nearby

Special Weather Statements in Oklahoma, 2019Every special weather statement 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.