Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 348, NWS Tulsa, OK

May 31, 20084 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 31, 2008, 8:56 AM CDT for 4 counties in Oklahoma. It was in force for 64 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 31, 2008, 8:56 AM CDT (13:56 UTC)
Expired: May 31, 2008, 10:00 AM CDT
In force: 64 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Craig County, OK, Mayes County, OK, Nowata County, OK, Rogers County, OK

The radar

The Tulsa radar (KINX), 79 km from the middle of the area, began a volume at 14:02 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.

What was reported inside it

Time	Report	Where	Remark
May 31, 9:02 AM CDT	HAIL 1	10 Ene Nowata, OK
May 31, 9:02 AM CDT	HAIL 1	Centrailia, OK
May 31, 9:05 AM CDT	TSTM WND DMG	10 E Nowata, OK	NUMEROUS BROKEN TREE LIMBS. PEA AND MARBLE SIZE HAIL.
May 31, 9:32 AM CDT	HAIL 1	Vinita, OK	NUMEROUS TREE BRANCHES BROKEN
May 31, 10:00 AM CDT	HAIL 1.75	8 N Lenapah, OK	IN SOUTH COFFEYVILLE...NICKEL UP TO GOLFBALL HAIL.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 5 storm reports to this severe thunderstorm warning; the first came 6 minutes after it went out.

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.

Issued	Product	Office	Lasted
May 31, 4:52 AM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 1.9 hours before the alert went out and 130 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: 1870 J/kg
Mixed-layer CIN: -62 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 130 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 311355
SVRTSA
OKC035-097-105-131-311500-
/O.NEW.KTSA.SV.W.0348.080531T1356Z-080531T1500Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
856 AM CDT SAT MAY 31 2008

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CRAIG COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN MAYES COUNTY IN NORTHEAST OKLAHOMA
  NOWATA COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN ROGERS COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 1000 AM CDT

* AT 854 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF BALL SIZE
  HAIL AND DAMAGING WINDS TO 70 MPH. THESE STORMS WERE LOCATED ALONG
  A LINE EXTENDING FROM 15 MILES WEST OF WELCH TO NEW ALLUWE TO
  WATOVA...MOVING EAST AT 32 MPH.

* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...NEW
  ALLUWE...CHELSEA...WHITE OAK...WELCH...VINITA...BIG CABIN...
  BLUEJACKET...KETCHUM...PENSACOLA AND LANGLEY.

THIS STORM IS LIKELY PRODUCING LARGE HAIL AND DAMAGING WINDS. SEEK
SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

DAMAGING WINDS MAY OCCUR WELL AHEAD OF ANY RAIN OR HAIL. DO NOT WAIT
FOR THE SOUND OF THUNDER BEFORE TAKING COVER. SEEK SHELTER
IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

LAT...LON 3699 9504 3698 9504 3695 9501 3685 9500
      3640 9502 3657 9582 3686 9571 3700 9563
TIME...MOT...LOC 1356Z 292DEG 28KT 3688 9535 3667 9542
          3656 9558

$$

3 follow-up statements

000 
WWUS54 KTSA 311413
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
914 AM CDT SAT MAY 31 2008

OKC035-097-105-131-311500-
/O.CON.KTSA.SV.W.0348.000000T0000Z-080531T1500Z/
ROGERS OK-CRAIG OK-NOWATA OK-MAYES OK-
914 AM CDT SAT MAY 31 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT
FOR NORTHERN MAYES...EASTERN NOWATA...CRAIG AND NORTHEASTERN ROGERS
COUNTIES...

AT 910 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF
BALL SIZE HAIL AND DAMAGING WINDS TO 70 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST OF HOLLOW TO
PYRAMID CORNERS TO 6 MILES NORTHWEST OF WHITE OAK TO CHELSEA...MOVING
EAST AT 34 MPH.

SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...WELCH...
BLUEJACKET...WHITE OAK...VINITA...BIG CABIN...PENSACOLA...KETCHUM AND
LANGLEY.

LAT...LON 3699 9504 3695 9501 3685 9500 3640 9502
      3652 9550 3677 9554 3699 9546
TIME...MOT...LOC 1414Z 285DEG 30KT 3693 9514 3678 9513
          3666 9531 3655 9539

$$

000 
WWUS54 KTSA 311420
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
920 AM CDT SAT MAY 31 2008

OKC105-131-311430-
/O.CAN.KTSA.SV.W.0348.000000T0000Z-080531T1500Z/
ROGERS OK-NOWATA OK-
920 AM CDT SAT MAY 31 2008

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN NOWATA AND
NORTHEASTERN ROGERS COUNTIES IS CANCELLED...

LAT...LON 3695 9501 3685 9500 3640 9502 3652 9533
      3660 9532 3660 9538 3677 9543 3694 9543
      3695 9541 3698 9541 3699 9504
TIME...MOT...LOC 1420Z 285DEG 30KT 3692 9508 3677 9507
          3665 9525 3654 9533

$$

OKC035-097-311500-
/O.CON.KTSA.SV.W.0348.000000T0000Z-080531T1500Z/
CRAIG OK-MAYES OK-
920 AM CDT SAT MAY 31 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1000 AM CDT
FOR NORTHEASTERN MAYES AND CRAIG COUNTIES...

AT 919 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING GOLF
BALL SIZE HAIL AND DAMAGING WINDS TO 70 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM WELCH TO BLUEJACKET TO WHITE OAK
TO 7 MILES WEST OF BIG CABIN...MOVING EAST AT 34 MPH.

SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...WHITE OAK...
BLUEJACKET...VINITA...BIG CABIN...PENSACOLA...KETCHUM AND LANGLEY.

LAT...LON 3695 9501 3685 9500 3640 9502 3652 9533
      3660 9532 3660 9538 3677 9543 3694 9543
      3695 9541 3698 9541 3699 9504
TIME...MOT...LOC 1420Z 285DEG 30KT 3692 9508 3677 9507
          3665 9525 3654 9533

$$

000 
WWUS54 KTSA 311458
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
958 AM CDT SAT MAY 31 2008

OKC035-097-311508-
/O.EXP.KTSA.SV.W.0348.000000T0000Z-080531T1500Z/
CRAIG OK-MAYES OK-
958 AM CDT SAT MAY 31 2008

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MAYES AND CRAIG
COUNTIES EXPIRES AT 1000 AM CDT...

THE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE THE
SEVERE THUNDERSTORM WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL NOON.

LAT...LON 3695 9501 3685 9500 3640 9502 3652 9533
      3660 9532 3660 9538 3677 9543 3694 9543
      3695 9541 3698 9541 3699 9504
TIME...MOT...LOC 1458Z 285DEG 30KT 3684 9470 3669 9469
          3657 9487 3646 9495

$$

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 May 31, 4:45 AM CDT, 4 hours 11 minutes earlier.

Area forecast discussion, May 31, 4:45 AM CDT, 4 hours 11 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
445 AM CDT SAT MAY 31 2008

.DISCUSSION...
FRONTAL  BOUNDARY FROM NORTHWEST OKLAHOMA THROUGH SOUTHEAST
KANSAS JUST STARTING TO LIGHT UP.  THE BEST ENERGY RELEASED
NORTH OF TSA CWA NORTH OF THE FRONT EARLY MORNING...BUT MAY
EXTEND/EXPAND INTO NORTHERN TIER OF COUNTIES.   SIGNIFICANT
POTENTIAL THIS AFTERNOON...PARTICULARLY NORTHEAST CORNER OF
FORECAST AREA WHEN FRONTAL CONVERGENCE AND BEST INSTABILITY
MERGE. FRONTAL BOUNDARY OR OUTFLOW MAY PROVIDE ENOUGH SHEAR
FOR ROTATING STORMS. AS FRONT SAGS INTO AREA TONIGHT PRECIP
CHANCES INCREASE. MCS A FAIR BET PROBABLY NORTHEAST..BUT NO
GUARANTEES. SUNDAY STILL A HIGH CHANCE POTENTIAL CONVECTION.

EXTENDED QUIET FIRST PART OF THE WEEK AND LOOKS ACTIVE LATER
PART OF THE WEEK.
GW

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   90  68  87  73 /  40  60  50  30
FSM   90  69  87  70 /  20  30  40  20
MLC   88  70  89  71 /  10  30  30  10
BVO   87  65  84  69 /  50  60  50  40
FYV   86  64  83  68 /  40  50  50  30
BYV   85  64  84  68 /  40  60  50  30
MKO   89  68  89  69 /  30  40  50  20
MIO   85  63  84  69 /  50  60  50  40
F10   90  68  89  71 /  20  40  40  20
HHW   88  69  89  70 /  10  10  20  10

&&

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

SHORT TERM...21
LONG TERM....21

Hazardous weather outlook, May 31, 8:50 AM CDT, 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
850 AM CDT SAT MAY 31 2008

ARZ001-002-010-011-019-020-029-OKZ049-053>076-011000-
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-
836 AM CDT SAT MAY 31 2008

...SEVERE THUNDERSTORMS THIS MORNING AND AGAIN THIS AFTERNOON AND EVENING...

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

.DAY ONE...TODAY AND TONIGHT.
TORNADO.
	RISK...LIMITED.
	AREA...NORTHEAST OKLAHOMA.
	ONSET...ONGOING.

SEVERE THUNDERSTORM.
	RISK...SIGNIFICANT.
	AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING IN NORTHEAST OKLAHOMA...LATE MORNING IN NORTHWEST ARKANSAS.

	AREA AT GREATEST RISK...NORTH OF U.S. 412 AND EAST OF U.S. 75.

FLASH FLOOD.
	RISK...LIMITED.
	AREA...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING IN NORTHEAST OKLAHOMA...LATE MORNING IN NORTHWEST ARKANSAS.

DISCUSSION...A COMPLEX OF SEVERE THUNDERSTORMS CONTINUES TO MOVE
ACROSS FAR NORTHEAST OKLAHOMA THIS MORNING. THESE STORMS WILL
CONTINUE TO PRODUCE LARGE HAIL AND DAMAGING WINDS AS THEY MOVE
ACROSS NORTHEAST OKLAHOMA AND INTO NORTHWEST ARKANSAS LATER THIS
MORNING. ADDITIONAL THUNDERSTORMS OVER SOUTHEAST KANSAS WILL ALSO
LIKELY MOVE INTO THE AREA BY LATE MORNING THROUGH EARLY AFTERNOON. GENERALLY
WEAK LOW LEVEL FLOW WILL LIMIT THE TORNADO THREAT.

AN OUTFLOW BOUNDARY WILL LIKELY BE LEFT BY THE MORNING ACTIVITY
ACROSS NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. THIS WILL SERVE
AS A FOCUS FOR MORE SEVERE THUNDERSTORM DEVELOPMENT THIS AFTERNOON
AND EVENING AS THE ATMOSPHERE BECOMES VERY UNSTABLE. THE PRIMARY
THREAT WILL AGAIN BE VERY LARGE HAIL AND DAMAGING STRAIGHT-LINE
WINDS WITH A LIMITED TORNADO POTENTIAL.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION WILL BE NEEDED THROUGH THE MORNING NORTH OF A
LINE FROM TULSA TO FAYETTEVILLE...AND MAY BE NEEDED AGAIN THIS
AFTERNOON IN OTHER PARTS OF NORTHEAST OKLAHOMA AND NORTHWEST
ARKANSAS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
SUNDAY...THUNDERSTORM POTENTIAL.
MONDAY...THUNDERSTORM POTENTIAL.
TUESDAY...NO HAZARDS.
WEDNESDAY...THUNDERSTORM POTENTIAL.
THURSDAY...THUNDERSTORM POTENTIAL.
FRIDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
MOIST AND UNSTABLE AIR WILL REMAIN OVER THE AREA FOR THE NEXT
WEEK WHICH WILL CONTINUE THE CHANCES OF SHOWERS AND THUNDERSTORMS
NEARLY EVERY DAY.

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

In the hours before

Local storm report, May 31, 8:00 AM CDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
800 AM CDT SAT MAY 31 2008

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

0740 AM     HAIL             8 NE PEARSONIA          36.88N 96.35W
05/31/2008  E1.50 INCH       OSAGE              OK   PUBLIC

&&

PBS

Local storm report, May 31, 8:52 AM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
852 AM CDT SAT MAY 31 2008

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

0851 AM     HAIL             BARTLESVILLE            36.75N 95.98W
05/31/2008  E1.00 INCH       WASHINGTON         OK   EMERGENCY MNGR

&&

PBS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 10:59 PM CDT	Special Weather Statement	TSA	Ottawa	61 min
May 31, 5:50 AM CDT	Severe Thunderstorm Warning	TSA	Osage	55 min
May 31, 6:47 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	58 min
May 31, 7:17 AM CDT	Severe Thunderstorm Warning	TSA	Osage	58 min
May 31, 7:44 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	61 min
May 31, 8:10 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Washington	65 min
May 31, 8:40 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	35 min
May 31, 9:16 AM CDT	Severe Thunderstorm Warning	TSA	Delaware, Ottawa	59 min
May 31, 9:41 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	47 min
May 31, 9:54 AM CDT	Special Weather Statement	TSA	Pawnee	51 min
May 31, 10:10 AM CDT	Severe Thunderstorm Warning	TSA	Craig	51 min
May 31, 10:20 AM CDT	Special Weather Statement	TSA	Tulsa	40 min
May 31, 10:23 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa	67 min
May 31, 10:48 AM CDT	Special Weather Statement	TSA	Ottawa	42 min
May 31, 11:14 AM CDT	Severe Thunderstorm Warning	TSA	Muskogee, Okmulgee, Wagoner	61 min
May 31, 11:54 AM CDT	Severe Thunderstorm Warning	TSA	McIntosh, Muskogee	38 min
May 31, 6:48 PM CDT	Tornado Warning	TSA	Osage	42 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2008 Every severe thunderstorm warning in 2008

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.