Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 118, NWS Tulsa, OK

April 21, 2004Okfuskee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 21, 2004, 9:14 PM CDT for Okfuskee County, Oklahoma. It was in force for 61 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 21, 2004, 9:14 PM CDT (02:14 UTC)
Expired: Apr 21, 2004, 10:15 PM CDT
In force: 61 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), 91 km from the middle of the area, began a volume at 02:14 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, 2.2 hours before the alert went out and 103 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: 415 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 1340 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 120 m²/s²
0-3 km storm-relative helicity: 357 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 11.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 220214
SVRTUL
OKC107-220315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
914 PM CDT WED APR 21 2004

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

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

* UNTIL 1015 PM CDT

* AT 914 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 8
  MILES WEST OF BEARDEN...MOVING EAST AT 30 MPH.

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

HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED
IN THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE
STORM HAS PASSED.

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

LAT...LON 3544 9645 3529 9643 3530 9598 3545 9608

$$

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 21, 9:09 PM CDT, 5 minutes earlier.

Area forecast discussion, Apr 21, 9:09 PM CDT, 5 minutes before

AREA FORECAST DISCUSSION...MESOSCALE UPDATE
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
909 PM CDT WED APR 21 2004

A SURFACE BOUNDARY EXTENDS FROM SOUTHERN SEBASTIAN COUNTY INTO
MCINTOSH COUNTY AND ON WEST.

THE SUPERCELL BETWEEN SEMINOLA AND OFUSKEE IS ON THE BOUNDARY.
OVERALL IT APPEARS THAT THE BASIC SHEAR PATTERN MAY NOT CHANGE MUCH
DURING THE NEXT SEVERAL HOURS SO THE CELL WILL BE MOVING INTO LESS
SHEAR...SO BY THE TIME IT REACHES THE TULSA WARNING AREA IT MAY
BECOME LESS ORGANIZED.

THREE OTHER SUPERCELLS ARE MOVING ACROSS SOUTHEAST OKLAHOMA.  AS
WITH THE NORTHERN CELL THE SHEAR ENVIRONMENT IS SOMEWHAT LESS
FAVORABLE IN THE SOUTHERN SECTIONS OF OUR WARNING AREA AND THE CELLS
MAY LOSE SOME ORGANIZATION AS THEY APPROACH PITTSBURG...PUSHMATAHA
AND CHOCTAW COUNTIES...BUT THEY WILL LIKELY STILL HAVE SOME SEVERE
POTENTIAL WITH 1000 TO 2000 J/KG OF CAPE TO PERSIST THERE FOR
SEVERAL MORE HOURS.

FORECAST ID= 08

.TSA WATCHES/WARNINGS/ADVISORIES...
AR...NONE.
OK...NONE.

Hazardous weather outlook, Apr 21, 1:00 PM CDT, 8 hours 14 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CDT WED APR 21 2004

ARZ001-002-010-011-019-020-029-OKZ049-053>076-221100-
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 WED APR 21 2004

.DAY ONE...THIS AFTERNOON AND TONIGHT

...SEVERE WEATHER OUTBREAK IS EXPECTED ACROSS EASTERN OKLAHOMA AND
   NORTHWEST ARKANSAS...

SIGNIFICANT SEVERE WEATHER IS EXPECTED ACROSS EASTERN OKLAHOMA AND
NORTHWEST ARKANSAS BEGINNING THIS AFTERNOON AND CONTINUING THROUGH
TONIGHT.  LARGE HAIL...DAMAGING WINDS...AND TORNADOES ARE LIKELY.

INSTABILITY HAS ALREADY BUILT TO IMPRESSIVE LEVELS ACROSS MUCH OF
EASTERN OKLAHOMA AHEAD OF AN APPROACHING MID LEVEL DISTURBANCE.
WIND FIELDS ASSOCIATED WITH THIS DISTURBANCE ARE RATHER STRONG AND
WILL CONTRIBUTE TO A FAVORABLE ENVIRONMENT FOR SUPERCELLS TO DEVELOP.

A STATIONARY FRONT IS LOCATED FROM NEAR JOPLIN MISSOURI STRETCHING
INTO THE TEXAS PANHANDLE.  FURTHER SOUTH...A WEAKER YET PRONOUNCED
OUTFLOW BOUNDARY REMAINS FROM THE PREVIOUS NIGHTS THUNDERSTORMS.
THIS BOUNDARY IS RUNNING VERY NEAR THE ARKANSAS RIVER VALLEY FROM
FORT SMITH WESTWARD AND INTERSECTING THE STATIONARY FRONT ACROSS
CENTRAL OKLAHOMA.  THIS BOUNDARY MAY DRIFT A BIT FURTHER NORTHWARD
HOWEVER THIS GENERAL PLACEMENT IS EXPECTED BY MID AFTERNOON WHEN
INITIAL THUNDERSTORM DEVELOPMENT WILL OCCUR.  ADDITIONAL
THUNDERSTORMS WILL DEVELOP ALONG THE STATIONARY FRONT ACROSS
NORTHERN OKLAHOMA AND SPREAD INTO NORTHEAST OKLAHOMA DURING THE
EVENING.

ACCOMPANYING THE SEVERE WEATHER THREAT WILL BE AN ELEVATED RISK OF
FLASH FLOODING ACROSS NORTHEAST OKLAHOMA WHERE PREVIOUS RAIN EVENTS
HAVE SATURATED THE SOIL LEAVING ANY ADDITIONAL RAINS TO CONTRIBUTE
TO A FLASH FLOOD POTENTIAL.

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 ACROSS THE ENTIRE OUTLOOK AREA SHOULD HAVE
ALREADY COMPLETED PREPARATIONS FOR SIGNIFICANT SEVERE WEATHER.
ADDITIONAL PREPARATIONS FOR POTENTIALLY DAMAGING TORNADOES SHOULD BE
CONSIDERED.  PERSONAL DEDICATED TO MONITORING THE LATEST WEATHER
CONDITIONS AND STATEMENTS IS RECOMMENDED.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
WIDESPREAD AND SIGNIFICANT SEVERE WEATHER WILL AGAIN BE POSSIBLE BOTH
THURSDAY AND FRIDAY.  LATER FORECASTS AND STATEMENTS SHOULD BE
CLOSELY MONITORED FOR FURTHER INFORMATION FOR THIS TIMEFRAME.

A RETURN TO MORE TRANQUIL WEATHER WILL ARRIVE BY THE WEEKEND AND
CONTINUE INTO EARLY NEXT WEEK.

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

In the hours before

Local storm report, Apr 21, 7:38 PM CDT, 1 hour 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
738 PM CDT WED APR 21 2004

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

0712 PM     TSTM WND GST     3 NE SAPULPA            36.03N 96.08W
04/21/2004  60 MPH           CREEK              OK   BROADCAST MEDIA

&&

GW

Local storm report, Apr 21, 7:44 PM CDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
744 PM CDT WED APR 21 2004

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

0735 PM     HAIL             ALMA                    35.48N 94.22W
04/21/2004  0.75 INCH        CRAWFORD           AR   AMATEUR RADIO

0730 PM     HAIL             ALMA                    35.48N 94.22W
04/21/2004  1.75 INCH        CRAWFORD           AR   AMATEUR RADIO

&&

GW

Local storm report, Apr 21, 7:46 PM CDT, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
746 PM CDT WED APR 21 2004

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

0703 PM     HAIL             VAN BUREN               35.44N 94.35W
04/21/2004  0.88 INCH        CRAWFORD           AR   AMATEUR RADIO

&&

GW

Special weather statement, Apr 21, 7:47 PM CDT, 1 hour 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
747 PM CDT WED APR 21 2004

OKZ067-220145-
WAGONER OK-
747 PM CDT WED APR 21 2004

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 845 PM CDT
FOR THE FOLLOWING COUNTY:

IN NORTHEAST OKLAHOMA
     WAGONER

AT 747 PM CDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 9 MILES WEST OF ONETA TO 3 MILES NORTHWEST OF
STONEBLUFF TO 6 MILES SOUTHWEST OF STONEBLUFF...MOVING EAST AT 25
MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY THESE STORMS INCLUDE...
WAGONER...CHOSKA...TULLAHASSEE...PORTER...STONEBLUFF...REDBIRD...
COWETA AND ONETA.

THESE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 50 MPH.

Local storm report, Apr 21, 8:25 PM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTION FOR ADDITIONAL INFO
NATIONAL WEATHER SERVICE TULSA OK
825 PM CDT WED APR 21 2004

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

0735 PM     HAIL             ALMA                    35.48N 94.22W
04/21/2004  0.75 INCH        CRAWFORD           AR   AMATEUR RADIO

0730 PM     HAIL             ALMA                    35.48N 94.22W
04/21/2004  1.75 INCH        CRAWFORD           AR   AMATEUR RADIO

            WINDSHIELDS BROKEN.  DAMAGE TO A SIGN AND AWNING AT
            TACO BELL.
&&

GW

Local storm report, Apr 21, 8:45 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT...AMENDED FOR ADDITIONAL INFO
NATIONAL WEATHER SERVICE TULSA OK
845 PM CDT WED APR 21 2004

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

0609 PM     TSTM WND DMG     SILVER CITY             36.09N 96.49W
04/21/2004                   CREEK              OK   EMERGENCY MNGR

            ONE HALF MILE NORTH OF SILVER CITY...TWO MOBILE
            HOMES DESTROYED...AND TREES UPROOTED.

            CONFIRMED...NO INJURIES.
&&

GW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 7:09 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	81 min
Apr 21, 7:13 PM CDT	Severe Thunderstorm Warning	TSA	Creek	47 min
Apr 21, 7:27 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa	63 min
Apr 21, 8:23 PM CDT	Flash Flood Warning	TSA	Cherokee	4 hr
Apr 21, 9:08 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	37 min
Apr 21, 9:25 PM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	65 min
Apr 21, 9:58 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Okfuskee, Okmulgee	62 min
Apr 21, 10:02 PM CDT	Severe Thunderstorm Warning	TSA	Adair	43 min
Apr 21, 10:08 PM CDT	Severe Thunderstorm Warning	TSA	Haskell	67 min
Apr 21, 10:40 PM CDT	Severe Thunderstorm Warning	TSA	Sequoyah	65 min
Apr 21, 10:44 PM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Okfuskee	61 min
Apr 21, 10:53 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh	52 min
Apr 21, 11:01 PM CDT	Tornado Warning	TSA	McIntosh	59 min
Apr 21, 11:16 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	59 min
Apr 21, 11:24 PM CDT	Tornado Warning	TSA	Haskell, Pittsburg	66 min
Apr 21, 11:41 PM CDT	Severe Thunderstorm Warning	TSA	Muskogee	49 min
Apr 21, 11:49 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	71 min
Apr 21, 11:56 PM CDT	Tornado Warning	TSA	McIntosh	64 min
Apr 22, 12:03 AM CDT	Tornado Warning	TSA	Haskell	42 min
Apr 22, 12:28 AM CDT	Tornado Warning	TSA	LeFlore	47 min
Apr 22, 12:29 AM CDT	Tornado Warning	TSA	Haskell, Muskogee	76 min
Apr 22, 12:43 AM CDT	Severe Thunderstorm Warning	TSA	Creek	62 min
Apr 22, 1:00 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Tulsa, Washington	60 min
Apr 22, 1:16 AM CDT	Flash Flood Warning	TSA	LeFlore	4 hr
Apr 22, 1:23 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	67 min
Apr 22, 1:34 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	56 min
Apr 22, 1:38 AM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	52 min
Apr 22, 1:49 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Rogers, Wagoner	41 min
Apr 22, 2:10 AM CDT	Severe Thunderstorm Warning	TSA	Mayes	35 min
Apr 22, 2:39 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh	51 min
Apr 22, 3:21 AM CDT	Severe Thunderstorm Warning	TSA	Muskogee	24 min
Apr 22, 3:29 PM CDT	Severe Thunderstorm Warning	TSA	Tulsa, Wagoner	76 min
Apr 22, 3:50 PM CDT	Severe Thunderstorm Warning	TSA	Rogers	70 min
Apr 22, 3:53 PM CDT	Tornado Warning	TSA	Wagoner	37 min
Apr 22, 3:56 PM CDT	Tornado Warning	TSA	Rogers	64 min
Apr 22, 4:20 PM CDT	Tornado Warning	TSA	Tulsa	55 min
Apr 22, 4:27 PM CDT	Tornado Warning	TSA	Mayes	63 min
Apr 22, 4:34 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	56 min
Apr 22, 4:36 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	24 min
Apr 22, 4:42 PM CDT	Tornado Warning	TSA	Wagoner	63 min
Apr 22, 5:03 PM CDT	Tornado Warning	TSA	Cherokee, Delaware	72 min
Apr 22, 5:11 PM CDT	Tornado Warning	TSA	Okmulgee, Tulsa	34 min
Apr 22, 5:25 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee, Okmulgee	80 min
Apr 22, 5:26 PM CDT	Tornado Warning	TSA	Mayes	34 min
Apr 22, 5:30 PM CDT	Tornado Warning	TSA	Muskogee	60 min
Apr 22, 5:40 PM CDT	Tornado Warning	TSA	Wagoner	65 min
Apr 22, 5:45 PM CDT	Tornado Warning	TSA	Okmulgee	60 min
Apr 22, 5:48 PM CDT	Tornado Warning	TSA	Adair	57 min
Apr 22, 5:54 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	51 min
Apr 22, 6:05 PM CDT	Severe Thunderstorm Warning	TSA	Craig	55 min
Apr 22, 6:26 PM CDT	Tornado Warning	TSA	Muskogee	64 min
Apr 22, 6:31 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee	59 min
Apr 22, 6:36 PM CDT	Tornado Warning	TSA	Cherokee	54 min
Apr 22, 6:41 PM CDT	Severe Thunderstorm Warning	TSA	Wagoner	64 min
Apr 22, 6:41 PM CDT	Severe Thunderstorm Warning	TSA	Okmulgee	79 min
Apr 22, 6:45 PM CDT	Tornado Warning	TSA	Adair	60 min
Apr 22, 6:51 PM CDT	Tornado Warning	TSA	Craig, Ottawa	54 min
Apr 22, 6:55 PM CDT	Severe Thunderstorm Warning	TSA	McIntosh	95 min
Apr 22, 6:56 PM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Muskogee, Okmulgee, Wagoner	4 hr

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.