Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 419, NWS Tulsa, OK

August 19, 2006Cherokee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Aug 19, 2006, 7:06 PM CDT for Cherokee County, Oklahoma. It was in force for 54 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
Aug 19, 2006, 7:06 PM CDT (00:06 UTC)
Expired
Aug 19, 2006, 8:00 PM CDT
In force
54 min
Issued by
NWS Tulsa, OK
Area
Counties, with a storm outline in the text

County Cherokee County, OK

The radar

The Tulsa radar (KINX), 59 km from the middle of the area, began a volume at 00:10 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, 0.1 hours before the alert went out and 154 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 2006-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1369 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, Springfield, MO at 00:00Z on 2006-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 square meters per square second.1939Sfc1 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
1369 J/kg
Mixed-layer CIN
-35 J/kg
Mixed-layer LCL
1959 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

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 Aug 19, 3:17 PM CDT, 3 hours 49 minutes earlier.

Area forecast discussion, Aug 19, 3:17 PM CDT, 3 hours 49 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
317 PM CDT SAT AUG 19 2006

.DISCUSSION...
ISOLATED SHOWERS AND THUNDERSTORMS DEVELOPED THIS AFTERNOON
MAINLY ALONG AND SOUTH OF THE WEAK WIND SHIFT BOUNDARY. EXPECT
SOME OF THESE THUNDERSTORMS TO PRODUCE STRONG DOWN BURST WINDS
GIVEN THE TEMPERATURE/DEW POINT SPREAD. THE THUNDERSTORMS WILL
DISSIPATE QUICKLY AS WE LOOSE HEATING.

WEAK SHALLOW BOUNDARY WASHING OUT WITH TIME AS IT CONTINUES
A SOUTHWARD DRIFT. AIR MASS REMAINS WARM AND RELATIVELY
MOIST. MORE SIGNIFICANT BOUNDARY REMAINS TO OUR NORTHWEST.
EXPECT THIS TO BECOME MORE ACTIVE DURING THE EVENING AND
GIVE NORTHERN PORTIONS OF THE AREA DECENT CHANCES FOR
SHOWERS AND THUNDERSTORMS LATE TONIGHT. TEMPERATURES
WILL BE VERY DEPENDENT ON HOW MUCH RAIN DOES DEVELOP AND
HAVE ACTUALLY SHADED THEM TO THE LOW SIDE DUE TO RAIN
IN THE NORTH AND LACK OF CLOUDS IN THE SOUTHEAST.

TEMPERATURES AND RAIN CHANCES ON SUNDAY VERY DIFFICULT. COULD
SEE LINGERING SHOWERS AND THUNDERSTORMS ACROSS THE NORTHERN
PORTIONS LIMITING HEATING FOR A GOOD PART OF THE DAY. IF
THE RAIN ENDS AND SOME CLEARING OCCURS...TEMPERATURES COULD
BE SIGNIFICANTLY WARMER.

NOT SURE THE COLD FRONT WILL CONTINUE PUSHING SOUTH OF THE
AREA MORE LIKELY WILL TURN INTO A VERY BROAD AND DIFFUSE ZONE
OVER THE NEXT COUPLE OF DAYS. HAVE BROAD BRUSHED LOW POPS DUE
TO THIS.

FOR WEDNESDAY AND THE REMAINDER OF THE FORECAST HAVE PUT IN
SLIGHTLY ABOVE NORMAL TEMPERATURES AND NO MENTION OF RAIN WITH
UPPER AIR PATTERN KEEPING MOST OF THE ACTIVITY WELL NORTH OF
OUR AREA.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   74  90  66  90 /  60  30  20  30
FSM   76  91  69  92 /  20  30  20  40
MLC   74  93  71  94 /  20  30  20  30
BVO   68  90  63  90 /  60  30  20  30
FYV   69  88  64  87 /  40  30  20  40
BYV   68  84  63  85 /  40  30  20  40
MKO   72  90  67  90 /  40  30  20  30
MIO   69  88  64  88 /  60  30  20  20
F10   74  92  68  91 /  40  30  20  30
HHW   75  95  75  94 /  20  30  20  20

&&

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

SHORT TERM FORECASTER ID= 21
LONG TERM FORECASTER ID= 15
Hazardous weather outlook, Aug 19, 12:48 PM CDT, 6 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
1248 PM CDT SAT AUG 19 2006

ARZ001-002-010-011-019-020-029-OKZ049-053>076-201000-
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 SAT AUG 19 2006

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SEVERE THUNDERSTORM.
	RISK...LIMITED.
	AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...AFTER 3 PM.

DANGEROUS HEAT.
	RISK...ELEVATED.
	AREA...SOUTH OF INTERSTATE 44.
	ONSET...ONGOING.

	AREA AT GREATEST RISK...WEST CENTRAL ARKANSAS.

FIRE WEATHER DANGER.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA.
	ONSET...ONGOING...ENDING BY MID EVENING.

	AREA AT GREATEST RISK...SOUTHEAST OKLAHOMA.

DISCUSSION...
SCATTERED THUNDERSTORMS ARE LIKELY THIS AFTERNOON ACROSS PORTIONS
OF EAST CENTRAL OKLAHOMA INTO NORTHWEST ARKANSAS.  THE GREATEST
COVERAGE WILL BE ALONG A WEAK SURFACE BOUNDARY WHICH WILL RESIDE
NEAR INTERSTATE 40 BY LATE AFTERNOON.  CONDITIONS ARE FAVORABLE
FOR DAMAGING DOWNBURST WINDS.  THUNDERSTORM COVERAGE SHOULD
DIMINISH BY LATE EVENING...WITH CHANCES INCREASING AGAIN DURING
THE LATE NIGHT HOURS OVER NORTHEAST OKLAHOMA.  THE SEVERE WEATHER
POTENTIAL WITH THE OVERNIGHT STORMS WILL ALSO BE LIMITED.

TEMPERATURES IN EXCESS OF 100 DEGREES AND LOW AFTERNOON HUMIDITY
VALUES WILL RAISE BOTH EXCESSIVE HEAT AND FIRE WEATHER CONCERNS.
BOTH OF THESE RISKS WILL BE DIMINISH AFTER SUNSET.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION MAY BE NEEDED IF AN ORGANIZED AREA OF
SEVERE THUNDERSTORM ACTIVITY DEVELOPS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
SUNDAY...THUNDERSTORM POTENTIAL...DANGEROUS HEAT POTENTIAL.
MONDAY...THUNDERSTORM POTENTIAL.
TUESDAY...THUNDERSTORM POTENTIAL.
WEDNESDAY...NO HAZARDS.
THURSDAY...HIGH FIRE WEATHER POTENTIAL.
FRIDAY...NO HAZARDS.

EXTENDED DISCUSSION...
THUNDERSTORM CHANCES WILL CONTINUE THROUGH TUESDAY AS THE WEAK
SURFACE BOUNDARY RESIDES NEAR THE AREA.  HOT TEMPERATURES MAY
PREVAIL ACROSS SOUTHEAST OKLAHOMA INTO SUNDAY...HOWEVER COOLER
WEATHER WILL RETURN AREAWIDE BY MONDAY.

FIRE WEATHER CONCERNS WILL INCREASE LATE IN THE WEEK AS
TEMPERATURES RETURN TO NEAR SEASONAL AVERAGES AND SOUTHERLY WINDS
STRENGTHEN.

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

In the hours before

Special weather statement, Aug 19, 5:37 PM CDT, 1 hour 29 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
537 PM CDT SAT AUG 19 2006

ARZ011-192300-
MADISON AR-
537 PM CDT SAT AUG 19 2006

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 600 PM CDT
FOR THE FOLLOWING COUNTY:

IN NORTHWEST ARKANSAS
     NORTHERN MADISON

AT 537 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 3 MILES
WEST OF FORUM...MOVING EAST AT 5 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...HARMONY...FORUM...MARBLE...ALABAM
AND CLIFTY.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.
Special weather statement, Aug 19, 5:41 PM CDT, 1 hour 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
541 PM CDT SAT AUG 19 2006

OKZ054-192315-
OSAGE OK-
541 PM CDT SAT AUG 19 2006

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 615 PM CDT
FOR THE FOLLOWING COUNTY:

IN NORTHEAST OKLAHOMA
     CENTRAL OSAGE

AT 541 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES
WEST OF WYNONA...MOVING NORTH AT 10 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...PAWHUSKA...WYNONA AND PERSHING.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
40 MPH. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE THE
SIGNIFICANT WEATHER ALERT IS UPGRADED TO A WARNING.
Special weather statement, Aug 19, 6:07 PM CDT, 59 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
607 PM CDT SAT AUG 19 2006

ARZ002-192330-
CARROLL AR-
607 PM CDT SAT AUG 19 2006

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 630 PM CDT
FOR THE FOLLOWING COUNTY:

IN NORTHWEST ARKANSAS
     CARROLL

AT 607 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES
SOUTHEAST OF EUREKA SPRINGS...MOVING WEST AT 5 MPH. SOME LOCATIONS
THAT WILL BE AFFECTED BY THIS STORM INCLUDE...BERRYVILLE...EUREKA
SPRINGS...URBANETTE AND GRANDVIEW.

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.
Special weather statement, Aug 19, 6:13 PM CDT, 53 minutes before
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Special weather statement, Aug 19, 6:18 PM CDT, 48 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
618 PM CDT SAT AUG 19 2006

OKZ064-192345-
CREEK OK-
618 PM CDT SAT AUG 19 2006

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 645 PM CDT
FOR THE FOLLOWING COUNTY:

IN NORTHEAST OKLAHOMA
     SOUTHERN CREEK

AT 618 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 3 MILES
SOUTHEAST OF MILFAY...STATIONARY. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...BRISTOW...MILFAY AND DEPEW.

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.
Special weather statement, Aug 19, 6:57 PM CDT, 9 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
657 PM CDT SAT AUG 19 2006

OKZ068-200030-
CHEROKEE OK-
657 PM CDT SAT AUG 19 2006

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 730 PM CDT
FOR THE FOLLOWING COUNTY:

IN EAST CENTRAL OKLAHOMA
     CHEROKEE

AT 657 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES
NORTH OF TAHLEQUAH...MOVING NORTHEAST AT 5 MPH.

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

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 9:16 PM CDTSevere Thunderstorm WarningTSATulsa59 min
Aug 20, 2:46 PM CDTSevere Thunderstorm WarningTSALatimer59 min
Aug 20, 3:35 PM CDTSevere Thunderstorm WarningTSALeFlore55 min
Aug 20, 3:50 PM CDTSevere Thunderstorm WarningTSALatimer55 min
Aug 20, 4:26 PM CDTSevere Thunderstorm WarningTSAHaskell, Pittsburg64 min
Aug 20, 5:29 PM CDTSevere Thunderstorm WarningTSAPittsburg61 min
Aug 20, 3:25 PM CDTSevere Thunderstorm WarningTSAFranklin65 min
Aug 20, 3:31 PM CDTSevere Thunderstorm WarningTSACrawford59 min
Aug 20, 4:24 PM CDTSevere Thunderstorm WarningTSACrawford66 min
Aug 20, 4:35 PM CDTSevere Thunderstorm WarningTSAFranklin55 min
Aug 20, 5:17 PM CDTSevere Thunderstorm WarningTSAMadison58 min
Aug 20, 5:43 PM CDTSevere Thunderstorm WarningTSAWashington21 min
Aug 20, 6:36 PM CDTSevere Thunderstorm WarningTSAMadison35 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2006Every severe thunderstorm warning in 2006

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.