Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 62, NWS Tulsa, OK

April 23, 2003McIntosh County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 23, 2003, 10:51 PM CDT for McIntosh County, Oklahoma. It was in force for 39 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 23, 2003, 10:51 PM CDT (03:51 UTC)
Expired
Apr 23, 2003, 11:30 PM CDT
In force
39 min
Issued by
NWS Tulsa, OK
Area
Counties, with a storm outline in the text

County McIntosh County, OK

The radar

The Tulsa radar (KINX), 91 km from the middle of the area, began a volume at 03:51 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 23, 9:35 PM CDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.9 hours before the alert went out and 155 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, Norman, OK at 00:00Z on 2003-04-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 32 joules per kilogram.LCLLFCEL10008507005003002001001 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, Norman, OK at 00:00Z on 2003-04-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 385 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
32 J/kg
Mixed-layer CIN
-184 J/kg
Mixed-layer LCL
505 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
385 m²/s²
0-3 km storm-relative helicity
487 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 240351
SVRTUL
OKC091-240430-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1051 PM CDT WED APR 23 2003

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MCINTOSH COUNTY IN SOUTHEAST OKLAHOMA

* UNTIL 1130 PM CDT

* AT 1051 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 3
  MILES NORTH OF HANNA...MOVING EAST AT 60 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...EUFAULA...
  CHECOTAH...HANNA...RAIFORD...VIVIAN...STIDHAM AND RENTIESVILLE.

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

LAT...LON 3539 9592 3516 9592 3532 9535 3557 9537

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 23, 9:58 PM CDT, 53 minutes earlier.

Area forecast discussion, Apr 23, 9:58 PM CDT, 53 minutes before
MESOSCALE FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OKLAHOMA
958 PM CDT WED APR 23 2003

ELEVATED THUNDERSTORMS ARE EXPECTED TO CONTINUE TO DEVELOP ACROSS
EASTERN OKLAHOMA AND NORTHWEST ARKANSAS OVER THE NEXT SEVERAL HOURS.
SOME OF THE THUNDERSTORMS ARE EXPECTED TO BECOME SEVERE AS AN AREA
OF ELEVATED INSTABILITY MOVES INTO THE AREA WITH LI VALUES COMPUTED
FROM 850MB OF -5 TO -7 MOVING INTO THE AREA. THE LIFT FOR THE
THUNDERSTORMS WILL BE PRODUCED BY A 45 TO 50 KT LOW LEVEL JET
ACROSS THE AREA WITH ADDITIONAL LIFT BEING PROVIDED BY DIFFLUENCE
ASSOCIATED WITH THE UPPER LEVEL LOW PRESSURE OVER EASTERN COLORADO.

THE MAIN THREAT WITH THE THUNDERSTORMS WILL BE LARGE HAIL WITH SOME
DAMAGING WINDS ALSO POSSIBLE.

FORECAST ID = 10

.TSA...
AR...NONE.
OK...NONE.
Hazardous weather outlook, Apr 23, 9:41 PM CDT, 1 hour 10 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-241100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
941 PM CDT WED APR 23 2003

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.

.DAY ONE...TONIGHT

SEVERE WEATHER OUTLOOK

...SEVERE THUNDERSTORMS LIKELY TONIGHT...

A VIGOROUS UPPER LEVEL STORM SYSTEM LOCATED OVER EASTERN COLORADO
THIS EVENING WILL CONTINUE TO APPROACH THE SOUTHERN PLAINS THROUGH
THE NIGHT. ELEVATED THUNDERSTORMS WILL CONTINUE TO DEVELOP IN
ADVANCE OF THE UPPER LEVEL STORM SYSTEM DURING THE OVERNIGHT HOURS
ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. SOME OF THESE
THUNDERSTORMS COULD BECOME SEVERE WITH LARGE HAIL THE PRIMARY
THREAT.

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

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
THUNDERSTORM CHANCES WILL CONTINUE INTO THURSDAY WITH THE HIGHEST
CHANCES ACROSS NORTHWEST ARKANSAS.  SEVERE WEATHER WILL BE POSSIBLE
WITH ANY THUNDERSTORMS THAT DEVELOP THURSDAY AND LATER FORECASTS
SHOULD BE CLOSELY MONITORED FOR DETAILED SEVERE WEATHER THREATS.

DRY AND WARM CONDITIONS WILL RETURN BY FRIDAY AND EXTEND INTO THE
WEEKEND.  THE NEXT CHANCE OF THUNDERSTORMS RETURNS ON MONDAY.

.SPOTTER / EMERGENCY MANAGEMENT ACTION STATEMENT...SPOTTER
ACTIVATION IS EXPECTED TONIGHT. EMERGENCY MANAGEMENT PERSONNEL
SHOULD CONTINUE TO CLOSELY MONITOR THE LATEST WEATHER CONDITIONS.

ADDITIONAL WEATHER INFORMATION CAN BE FOUND AT...
WWW.SRH.NOAA.GOV/TULSA

In the hours before

Special weather statement, Apr 23, 9:36 PM CDT, 1 hour 15 minutes before
OKZ065-066-240330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
936 PM CDT WED APR 23 2003

...SIGNIFICANT WEATHER ALERT IN EFFECT FOR OKMULGEE AND OKFUSKEE
   COUNTIES UNTIL 1030 PM CDT...

AT 936 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES
SOUTH OF BEARDEN...MOVING NORTHEAST AT 45 MPH. THIS STORM WILL BE
CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO 40 MPH. THE
COMMUNITIES OF OKEMAH...BEARDEN...CLEARVIEW...PHAROAH...CASTLE...
OKFUSKEE...OKMULGEE...HENRYETTA AND SCHULTER WILL BE AFFECTED BY THIS
STORM THROUGH 1030 PM CDT.
Special weather statement, Apr 23, 10:03 PM CDT, 48 minutes before
OKZ049-053-060-064>076-240800-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1003 PM CDT WED APR 23 2003

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
152 UNTIL 300 AM CDT THURSDAY MORNING FOR THE FOLLOWING AREAS:

IN OKLAHOMA THIS WATCH INCLUDES 16 COUNTIES...
IN EAST CENTRAL OKLAHOMA:

CHEROKEE              MUSKOGEE              OKFUSKEE
SEQUOYAH

IN NORTHEAST OKLAHOMA:

ADAIR                 CREEK                 OKMULGEE
TULSA                 WAGONER

IN SOUTHEAST OKLAHOMA:

CHOCTAW               HASKELL               LATIMER
LE FLORE              MCINTOSH              PITTSBURG
PUSHMATAHA

THIS INCLUDES THE CITIES OF ANTLERS...BRISTOW...BROKEN ARROW...
CLAYTON...EUFAULA...HUGO...MCALESTER...MUSKOGEE...OKEMAH...
OKMULGEE...POTEAU...SALLISAW...SAND SPRINGS...STIGLER...STILWELL...
TAHLEQUAH...TULSA...WAGONER AND WILBURTON.
Special weather statement, Apr 23, 10:23 PM CDT, 28 minutes before
OKZ060-067-240415-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1023 PM CDT WED APR 23 2003

...SIGNIFICANT WEATHER ALERT IN EFFECT FOR SOUTH TULSA AND WAGONER
   COUNTIES UNTIL 1115 PM CDT...

AT 1023 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
LEONARD...MOVING NORTHEAST AT 45 MPH. THIS STORM WILL BE CAPABLE OF
PRODUCING SMALL HAIL AND WIND GUSTS TO 40 MPH. THE COMMUNITIES OF
LEONARD...BIXBY...BROKEN ARROW...COWETA AND ONETA WILL BE AFFECTED BY
THIS STORM THROUGH 1115 PM CDT. RESIDENTS IN THESE AREAS SHOULD
REMAIN ALERT IN CASE WARNINGS ARE ISSUED.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 23, 10:19 PM CDTSevere Thunderstorm WarningTSAPittsburg41 min
Apr 23, 10:58 PM CDTSevere Thunderstorm WarningTSAHaskell, Latimer, Pittsburg47 min
Apr 23, 11:19 PM CDTSevere Thunderstorm WarningTSACherokee, Muskogee, Sequoyah41 min
Apr 24, 4:15 PM CDTSevere Thunderstorm WarningTSANowata, Osage, Washington60 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2003Every severe thunderstorm warning in 2003

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.