Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 170, NWS Tulsa, OK

April 22, 2004Okfuskee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 22, 2004, 11:58 PM CDT for Okfuskee County, Oklahoma. It was in force for 32 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: Apr 22, 2004, 11:58 PM CDT (04:58 UTC)
Expired: Apr 23, 2004, 12:30 AM CDT
In force: 32 min
Issued by: NWS Tulsa, OK
Area: Counties, with a storm outline in the text

County Okfuskee County, OK

The radar

The Norman radar (KTLX), 100 km from the middle of the area, began a volume at 05:01 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 5.0 hours before the alert went out and 112 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: 486 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 1096 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 118 m²/s²
0-3 km storm-relative helicity: 338 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

485 
WUUS54 KTSA 230458
SVRTUL
OKC107-230530-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1158 PM CDT THU APR 22 2004

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN OKFUSKEE COUNTY IN EAST CENTRAL OKLAHOMA

* UNTIL 1230 AM CDT

* AT 1158 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3
  MILES WEST OF WELEETKA...MOVING EAST AT 25 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...WELEETKA AND
  CLEARVIEW.

HAIL TO THE SIZE OF PENNIES CAN BE EXPECTED IN THE WARNED AREA. STAY
INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 3541 9632 3523 9628 3526 9597 3541 9601

$$

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 Apr 22, 9:35 PM CDT, 2 hours 23 minutes earlier.

Area forecast discussion, Apr 22, 9:35 PM CDT, 2 hours 23 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
935 PM CDT THU APR 22 2004

STRONGER 850-700 MILLIBAR FLOW TODAY THAN WEDNESDAY YIELDED A
TORNADIC OUTBREAK LATE THIS AFTERNOON AND EARLY THIS EVENING.
TORNADIC STORMS HAVE WEAKENED WITH A TRANSITION UNDERWAY TO ELEVATED
STORMS WITH HAIL BECOMING THE MAIN THREAT. TRAINING OF STORMS
EARLIER RESULTED IN COPIOUS RAINFALL AMOUNTS WITH OVER 3 INCHES
FALLING IN ABOUT AN HOUR AT THE MESONET SITE IN SOUTHERN WAGONER
COUNTY.

FLASH FLOOD WATCH WILL CONTINUE AREAWIDE OVERNIGHT AS HEAVY RAINFALL
WILL REMAIN POSSIBLE WITH THE STORMS. CAPPING INVERSION HAS
PREVENTED THUNDERSTORM DEVELOPMENT IN SOUTHEAST OKLAHOMA BUT THE 00Z
ETA INDICATES THAT ELEVATED CONVECTION MAY INCREASE IN THIS AREA
LATE TONIGHT. IT IS DOUBTFUL THAT FLASH FLOODING WILL OCCUR IN THIS
AREA BUT DO NOT FEEL TOTALLY COMFORTABLE CANCELLING THE WATCH AT
THIS TIME ESPECIALLY SINCE IT WILL LIKELY BE NEEDED LATER ANYWAY.
THE WATCH WILL LIKELY NEED TO BE EXTENDED THROUGH SATURDAY AREAWIDE
BUT THE AREA OF GREATEST CONCERN OVER THE NEXT 48 HOURS WILL
GENERALLY BE ALONG AND NORTH OF INTERSTATE 40 WHERE SEVERAL INCHES
OF RAIN WILL BE LIKELY FRIDAY NIGHT AND SATURDAY.

FRIDAY MAY BE ANOTHER FAIRLY ACTIVE SEVERE WEATHER DAY ALTHOUGH DEEP
LAYER SHEAR WILL BE DECREASING SO NOT EXPECTING ANYTHING LIKE TODAY.
BEYOND 00Z FRIDAY...WATER WILL BE THE BIGGEST CONCERN WITH PERHAPS
AN ISOLATED HAIL THREAT THROUGH THE NIGHT FRIDAY NIGHT.

ADJUSTED POPS TONIGHT TO FIT THE CURRENT TRENDS AND ALSO REMOVED THE
SEVERE WORDING ALTHOUGH ISOLATED SEVERE STORMS WILL PERSIST.

UPDATE COMING SHORTLY.

FORECAST ID= 05

.TSA WATCHES/WARNINGS/ADVISORIES...
AR...FLASH FLOOD WATCH TONIGHTY FOR ZONES
ARZ001>002...ARZ010>011...ARZ019>020...ARZ029.

OK...FLASH FLOOD WATCH TONIGHT FOR ZONES OKZ049...OKZ053>076.

PLATE

Hazardous weather outlook, Apr 22, 1:00 PM CDT, 10 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CDT THU APR 22 2004

ARZ001-002-010-011-019-020-029-OKZ049-053>076-231100-
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-
100 PM CDT THU APR 22 2004

.DAY ONE...THIS AFTERNOON AND TONIGHT

...SEVERE THUNDERSTORMS ARE LIKELY THIS AFTERNOON AND TONIGHT ACROSS
  MUCH OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS...

NUMEROUS SURFACE BOUNDARIES RESIDE ACROSS THE OUTLOOK AREA THIS
AFTERNOON...AND WITH AN UNSTABLE AIRMASS IN PLACE AND FAVORABLE WIND
FIELDS ALOFT...ANOTHER ROUND OF SEVERE WEATHER IS EXPECTED LATE THIS
AFTERNOON THROUGH TONIGHT.

INITIAL THUNDERSTORM DEVELOPMENT IS EXPECTED BY LATE AFTERNOON ALONG
A REMNANT OUTFLOW BOUNDARY.  THIS BOUNDARY IS EXPECTED TO EXTEND FROM
NEAR TULSA SOUTHEASTWARD FOLLOWING THE ARKANSAS RIVER VALLEY AND
CONTINUING THROUGH WEST CENTRAL ARKANSAS.  ADDITIONAL THUNDERSTORM
DEVELOPMENT IS EXPECTED FURTHER WEST ACROSS CENTRAL AND NORTHERN
OKLAHOMA WITH STORMS TRACKING INTO THE AREA BY EARLY EVENING.  THE
SEVERE WEATHER THREAT WILL CONTINUE OVERNIGHT AS LOW LEVEL WINDS
INCREASE AND THE ATMOSPHERE REMAINS UNSTABLE.  THE PRIMARY SEVERE
WEATHER THREATS WILL BE LARGE HAIL AND DAMAGING WINDS...WITH THE
THREAT FOR TORNADOES BEING HIGHEST NEAR THE SURFACE BOUNDARY
LOCATIONS.

OF EQUAL CONCERN IS THE POTENTIAL FOR FLASH FLOODING ACROSS THE
AREA...ESPECIALLY FAR EASTERN OKLAHOMA AND WESTERN ARKANSAS WHERE
LATEST DATA SUGGEST THE HEAVIEST RAINS WILL FALL TONIGHT.  A FLOOD
WATCH IS BEING CONSIDERED...AND PERSONS ACROSS THE ENTIRE OUTLOOK
AREA SHOULD BE ALERT FOR POTENTIAL FLOODING CONDITIONS.

WARNING PROBABILITIES FOR SEVERE THUNDERSTORMS AND TORNADOES CAN BE
FOUND IN THE CURRENT HAZARDS SECTION AT: WWW.SRH.NOAA.GOV/TULSA.
GIVEN PROBABILITIES REPRESENT THE POTENTIAL FOR A WARNING TO BE
ISSUED AT YOUR LOCATION.

SPOTTER / EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION WILL BE REQUIRED LATER TODAY. EMERGENCY
MANAGEMENT PERSONNEL SHOULD BE PREPARED FOR ANOTHER ROUND OF SEVERE
WEATHER...INCLUDING THE POSSIBILITY OF TORNADOES.  ALL SHOULD CLOSELY
MONITOR THE LATEST WEATHER CONDITIONS AND STATEMENTS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
THE SEVERE WEATHER THREAT WILL CONTINUE INTO THROUGH FRIDAY INTO
SATURDAY MORNING.  CONDITIONS SHOULD FINALLY BECOME MORE TRANQUIL
WITH A RETURN TO DRY WEATHER BY THE END OF THE WEEKEND CONTINUING
THROUGH MUCH OF NEXT WEEK.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL TABULAR AND
GRAPHICAL INFORMATION

In the hours before

Local storm report, Apr 22, 10:09 PM CDT, 1 hour 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1009 PM CDT THU APR 22 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

0932 PM     HAIL             CANADIAN                35.18N 95.65W
04/22/2004  1.00 INCH        PITTSBURG          OK   PUBLIC

0940 PM     HAIL             3 NNE CANADIAN          35.22N 95.63W
04/22/2004  1.75 INCH        PITTSBURG          OK   PUBLIC

&&

GM

Special weather statement, Apr 22, 10:18 PM CDT, 1 hour 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1018 PM CDT THU APR 22 2004

ARZ029-OKZ076-230400-
LE FLORE OK-SEBASTIAN AR-
1018 PM CDT THU APR 22 2004

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 1100 PM CDT
FOR THE FOLLOWING COUNTIES:

IN WEST CENTRAL ARKANSAS
     SEBASTIAN

IN SOUTHEAST OKLAHOMA
     LE FLORE

AT 1018 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 2
MILES NORTH OF CAMERON...MOVING EAST AT 25 MPH. SOME LOCATIONS THAT
WILL BE AFFECTED BY THIS STORM INCLUDE...CROSSROADS...MILLTOWN...MILL
CREEK...CAMERON...ROCK ISLAND...SPIRO...POCOLA...SCULLYVILLE...
BRADEN...URSULA...HACKETT...GREENWOOD...BARLING...LAVACA...ARKOLA...
MIDLAND...DAYTON...WITCHERVILLE...WASHBURN...BURNVILLE...JENSON...
EXCELSIOR...BONANZA...JENNY LIND...RYE HILL...BLOOMER AND CENTRAL
CITY.

A LARGE PORTION OF SEBASTIAN AND LE FLORE COUNTIES WILL BE AFFECTED
BY THESE STORMS THROUGH 1100 PM CDT.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
50 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.

Local storm report, Apr 22, 10:21 PM CDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1021 PM CDT THU APR 22 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

1005 PM     HAIL             5 SE EUFAULA            35.24N 95.52W
04/22/2004  1.75 INCH        PITTSBURG          OK   TRAINED SPOTTER

            REPORT FROM LONGTOWN COMMUNITY

&&

GM

Local storm report, Apr 22, 10:37 PM CDT, 1 hour 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1037 PM CDT THU APR 22 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

1022 PM     HAIL             3 NW ENTERPRISE         35.26N 95.42W
04/22/2004  2.00 INCH        HASKELL            OK   TRAINED SPOTTER

            REPORTED ON HIGHWAY 71

&&

GM

Local storm report, Apr 22, 11:09 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1109 PM CDT THU APR 22 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

1108 PM     HAIL             GREENWOOD               35.22N 94.26W
04/22/2004  0.75 INCH        SEBASTIAN          AR   TRAINED SPOTTER

&&

GM

Local storm report, Apr 22, 11:55 PM CDT, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1155 PM CDT THU APR 22 2004

..TIME...   ...EVENT...     ...CITY LOCATION...      ...LAT.LON...
..DATE...   ....MAG....     ..COUNTY LOCATION...ST.. ...SOURCE....
            ..REMARKS..

1124 PM     HAIL             STIDHAM                 35.37N 95.70W
04/22/2004  1.00 INCH        MCINTOSH           OK   TRAINED SPOTTER

&&

GM

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 7:26 PM CDT	Tornado Warning	TSA	Cherokee, Muskogee	64 min
Apr 22, 7:47 PM CDT	Severe Thunderstorm Warning	TSA	Adair	58 min
Apr 22, 8:23 PM CDT	Tornado Warning	TSA	Cherokee	52 min
Apr 22, 8:35 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Pittsburg	55 min
Apr 22, 8:50 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa	55 min
Apr 22, 9:30 PM CDT	Severe Thunderstorm Warning	TSA	Haskell, McIntosh, Pittsburg	75 min
Apr 22, 9:31 PM CDT	Severe Thunderstorm Warning	TSA	Washington	44 min
Apr 22, 10:25 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore	65 min
Apr 22, 10:53 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh	67 min
Apr 22, 11:14 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	46 min
Apr 23, 12:01 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee	59 min
Apr 23, 12:49 AM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	41 min
Apr 23, 1:19 AM CDT	Severe Thunderstorm Warning	TSA	Adair	41 min
Apr 23, 2:31 AM CDT	Severe Thunderstorm Warning	TSA	Adair	29 min
Apr 23, 8:42 AM CDT	Severe Thunderstorm Warning	TSA	Pawnee	48 min
Apr 23, 9:43 AM CDT	Severe Thunderstorm Warning	TSA	Osage	62 min
Apr 23, 4:21 PM CDT	Flash Flood Warning	TSA	Adair, Cherokee	4 hr
Apr 23, 6:23 PM CDT	Flash Flood Warning	TSA	McIntosh	4 hr
Apr 23, 6:24 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	51 min
Apr 23, 6:43 PM CDT	Severe Thunderstorm Warning	TSA	Adair	47 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2004 Every severe thunderstorm warning in 2004

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.