Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 256, NWS Tulsa, OK

May 2, 20086 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 2, 2008, 2:29 AM CDT for 6 counties in Oklahoma. It was in force for 61 min. 4 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 2, 2008, 2:29 AM CDT (07:29 UTC)
Expired: May 2, 2008, 3:30 AM CDT
In force: 61 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

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

The radar

The Tulsa radar (KINX), 82 km from the middle of the area, began a volume at 07:31 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 2, 2:56 AM CDT	TSTM WND DMG	8 Ene Claremore, OK	STRUCTURAL DAMAGE TO BUILDINGS. POWER LINES DOWN. MOBILE HOME DAMAGED. NEAR COUNTY ROAD 4250 AND 429.
May 2, 3:00 AM CDT	TSTM WND GST 60	7 E Centrailia, OK
May 2, 3:15 AM CDT	TSTM WND GST 60	5 S Adair, OK
May 2, 3:29 AM CDT	TSTM WND DMG	Picher, OK	LARGE TREE BLOWN DOWN. TOOK OUT POWER LINES

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 4 storm reports to this severe thunderstorm warning; the first came 27 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 2, 1:09 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 7.5 hours before the alert went out and 108 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: 1112 J/kg
Mixed-layer CIN: -241 J/kg
Mixed-layer LCL: 1195 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 225 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 020729
SVRTSA
OKC035-041-097-105-115-131-020830-
/O.NEW.KTSA.SV.W.0256.080502T0729Z-080502T0830Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
229 AM CDT FRI MAY 2 2008

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CRAIG COUNTY IN NORTHEAST OKLAHOMA
  WESTERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  MAYES COUNTY IN NORTHEAST OKLAHOMA
  EASTERN NOWATA COUNTY IN NORTHEAST OKLAHOMA
  OTTAWA COUNTY IN NORTHEAST OKLAHOMA
  ROGERS COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 330 AM CDT

* AT 226 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY SIZE HAIL
  AND WINDS TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 20 MILES WEST OF WELCH TO VERDIGRIS...MOVING EAST AT
  40 MPH.

* SOME LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE...VERDIGRIS...
  NEW ALLUWE...CLAREMORE...FOYIL...TIAWAH...CHELSEA...WHITE OAK...
  WELCH...ADAIR...PRYOR...BIG CABIN...CHOUTEAU...VINITA...
  BLUEJACKET...PENSACOLA...NARCISSA...SALINA...AFTON...LOCUST
  GROVE...COMMERCE...LANGLEY...MIAMI...KETCHUM...CLEORA...PICHER...
  DISNEY...SPAVINAW...QUAPAW...BERNICE...FAIRLAND...CHLOETA...ROSE...
  WYANDOTTE...GROVE...LEACH...JAY AND TWIN OAKS.

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS.
TAKE COVER ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM
WINDOWS.

STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 3700 9474 3700 9463 3698 9460 3689 9460
      3618 9481 3617 9582 3628 9582 3702 9550
      3701 9476
TIME...MOT...LOC 0729Z 274DEG 40KT 3696 9540 3624 9570

$$

1 follow-up statement

000 
WWUS54 KTSA 020800
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
300 AM CDT FRI MAY 2 2008

OKC105-020810-
/O.CAN.KTSA.SV.W.0256.000000T0000Z-080502T0830Z/
NOWATA OK-
300 AM CDT FRI MAY 2 2008

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN NOWATA COUNTY IS
CANCELLED...

LAT...LON 3699 9462 3680 9460 3678 9464 3618 9481
      3617 9571 3661 9547 3662 9543 3667 9543
      3701 9524
TIME...MOT...LOC 0800Z 274DEG 40KT 3694 9505 3622 9536

$$

OKC035-041-097-115-131-020830-
/O.CON.KTSA.SV.W.0256.000000T0000Z-080502T0830Z/
ROGERS OK-DELAWARE OK-CRAIG OK-OTTAWA OK-MAYES OK-
300 AM CDT FRI MAY 2 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 AM CDT
FOR MAYES...OTTAWA...CRAIG...WESTERN DELAWARE AND EASTERN ROGERS
COUNTIES...

AT 256 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING PENNY
SIZE HAIL AND WINDS TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM WELCH TO CHOUTEAU...MOVING EAST AT 35 MPH.

SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...BIG CABIN...
VINITA...BLUEJACKET...PENSACOLA...STRANG...LOCUST GROVE...COMMERCE...
SALINA...NARCISSA...MIAMI...KETCHUM...AFTON...PICHER...CARDIN...
LANGLEY...CLEORA...DISNEY...SPAVINAW...QUAPAW...BERNICE...OTTAWA...
CHLOETA...FAIRLAND...ROSE...ZENA...PEORIA...WYANDOTTE...GROVE...TWIN
OAKS...LEACH AND JAY.

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO ACT QUICKLY.

STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

LAT...LON 3699 9462 3680 9460 3678 9464 3618 9481
      3617 9571 3661 9547 3662 9543 3667 9543
      3701 9524
TIME...MOT...LOC 0800Z 274DEG 40KT 3694 9505 3622 9536

$$

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 2, 1:57 AM CDT, 32 minutes earlier.

Area forecast discussion, May 2, 1:57 AM CDT, 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
157 AM CDT FRI MAY 2 2008

.MESOSCALE UPDATE...
THE TTUL TDWR DATA REVEALS A SMALL MESO
HAS BEEN TRACKING ACROSS SOUTHERN CREEK COUNTY.

THE MESO HAS BECOME BETTER ORGANIZED.  GIVEN
THE STRONG LOW-LEVEL SHEAR ENVIRONMENT SOME
TORNADO THREAT EXISTS NOT ONLY WITH THE CREEK
COUNTY SEGMENT OF THE LINE...BUT ALL THE LINE
IN NORTHEAST OKALAHOMA.

&&

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

SHORT TERM...08
LONG TERM....99

Hazardous weather outlook, May 1, 10:53 PM CDT, 3 hours 36 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
1053 PM CDT THU MAY 1 2008

ARZ001-002-010-011-019-020-029-OKZ049-053>076-021000-
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-
1043 PM CDT THU MAY 1 2008

...ADDITIONAL STORMS WILL MOVE THROUGH THE AREA OVERNIGHT...

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....EASTERN OKLAHOMA.
	ONSET...AFTER MIDNIGHT.

SEVERE THUNDERSTORM.
	RISK...SIGNIFICANT.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...AROUND MIDNIGHT...OSAGE COUNTY.

	AREA AT GREATEST RISK...EASTERN OKLAHOMA.

FLASH FLOOD.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA.

DISCUSSION...
A COLD FRONT WILL SWEEP ACROSS THE AREA OVERNIGHT. A LINE OF
STORMS WITH AND SLIGHTLY AHEAD OF THE FRONT IS EXPECTED TO REACH
NORTHWEST OSAGE COUNTY AROUND MIDNIGHT AND CONTINUE MOVING
ACROSS THE REGION REACHING NORTHWEST ARKANSAS BETWEEN 3 AND 5 AM.
THE PROGRESSIVE LINEAR NATURE OF CONVECTION OVERNIGHT SUGGESTS A MUCH
LARGER AREA OF EASTERN OKLAHOMA WILL BE EFFECTED BY STORMS THAN
THE SCATTERED SUPER CELLS NORTHWEST OF TULSA THURSDAY EVENING.

LARGE HAIL AND DAMAGING WINDS WILL THE PRIMARY THREAT WITH A SMALL
RISK OF TORNADOES.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
SPOTTER ACTIVATION WILL BE NEEDED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY...THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL.
SATURDAY...NO HAZARDS.
SUNDAY...NO HAZARDS.
MONDAY...THUNDERSTORM POTENTIAL.
TUESDAY...THUNDERSTORM POTENTIAL.
WEDNESDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
THUNDERSTORMS ASSOCIATED WITH THE COLD FRONT MAY LINGER IN THE REGION
EARLY FRIDAY MORNING BEFORE ENDING BY MID MORNING AS THE FRONT AND
UPPER LEVEL SYSTEM MOVE AWAY FROM THE FORECAST AREA. A QUIET PERIOD IS
EXPECTED FOR THE WEEKEND. A CHANCE OF THUNDERSTORMS RETURNS SUNDAY
NIGHT AS THE NEXT SYSTEM APPROACHES. A CHANCE FOR THUNDERSTORMS
REMAINS IN THE FORECAST MONDAY THROUGH WEDNESDAY.

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

In the hours before

Local storm report, May 1, 8:34 PM CDT, 5 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TULSA OK
834 PM CDT THU MAY 01 2008

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

0825 PM     TORNADO          7 W BLACKBURN           36.37N 96.72W
05/01/2008                   PAWNEE             OK   BROADCAST MEDIA

            LARGE CONE TORNADO

&&

BAS

Local storm report, May 1, 8:39 PM CDT, 5 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
839 PM CDT THU MAY 01 2008

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

0825 PM     TORNADO          2 SE RALSTON            36.48N 96.71W
05/01/2008                   OSAGE              OK   STORM CHASER

            100 YARD WIDE MULTI VORTEX TORNADO. HAS BEEN 2 TORNADOES
            ON THE GROUND AT THE SAME TIME.

&&

BAS

Local storm report, May 1, 9:10 PM CDT, 5 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
910 PM CDT THU MAY 01 2008

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

0907 PM     TORNADO          8 SW PAWHUSKA           36.59N 96.44W
05/01/2008                   OSAGE              OK   STORM CHASER

            TORNADO THAT IS TRACKING THROUGH PAWNEE AND OSAGE
            COUNTIES REMAINS ON THE GROUND AT THIS TIME. CONTINUED
            REPORTS OF 2 TORNADOES ON THE GROUND AT THE SAME TIME
            INTERMITTENTLY.

&&

BAS

Local storm report, May 2, 1:40 AM CDT, 49 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
140 AM CDT FRI MAY 02 2008

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

0133 AM     HAIL             4 N HOMINY              36.47N 96.39W
05/01/2008  E0.75 INCH       OSAGE              OK   AMATEUR RADIO

            DIME TO PENNY SIZE HAIL

&&

DMJ

Local storm report, May 2, 2:12 AM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
212 AM CDT FRI MAY 02 2008

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

0212 AM     HAIL             SAND SPRINGS            36.14N 96.11W
05/02/2008  E0.75 INCH       TULSA              OK   AMATEUR RADIO

            DIME TO PENNY SIZE HAIL

&&

DMJ

Local storm report, May 2, 2:14 AM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TULSA OK
214 AM CDT FRI MAY 02 2008

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

0133 AM     HAIL             4 N HOMINY              36.47N 96.39W
05/02/2008  E0.75 INCH       OSAGE              OK   AMATEUR RADIO

            DIME TO PENNY SIZE HAIL

&&

DMJ

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 7:08 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	67 min
May 1, 7:38 PM CDT	Tornado Warning	TSA	Pawnee	67 min
May 1, 7:42 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	63 min
May 1, 8:28 PM CDT	Tornado Warning	TSA	Osage, Pawnee	62 min
May 1, 8:45 PM CDT	Tornado Warning	TSA	Creek, Pawnee	31 min
May 1, 9:21 PM CDT	Tornado Warning	TSA	Osage	30 min
May 2, 12:26 AM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	64 min
May 2, 1:13 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee, Okmulgee, Tulsa	62 min
May 2, 1:27 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Osage, Pawnee, Rogers, Tulsa and 1 more	63 min
May 2, 2:13 AM CDT	Severe Thunderstorm Warning	TSA	Creek, McIntosh, Mayes, Muskogee, Okfuskee, Okmulgee and 4 more	62 min
May 2, 3:09 AM CDT	Tornado Warning	TSA	Mayes	31 min
May 2, 3:16 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Haskell, Latimer, McIntosh, Mayes and 4 more	59 min
May 2, 3:30 AM CDT	Severe Thunderstorm Warning	TSA	Delaware, Mayes, Ottawa	60 min
May 2, 4:02 AM CDT	Tornado Warning	TSA	Adair, Delaware	43 min
May 2, 4:11 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Haskell, Latimer, LeFlore, Pittsburg and 1 more	64 min
May 2, 5:10 AM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Sequoyah	80 min
May 2, 5:45 AM CDT	Special Weather Statement	TSA	Pushmataha	45 min
May 2, 6:06 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore, Pushmataha	54 min
May 2, 6:12 AM CDT	Areal Flood Advisory	TSA	Okfuskee, Okmulgee, Osage	30 days
May 2, 6:28 AM CDT	Severe Thunderstorm Warning	TSA	Pushmataha	47 min
May 2, 7:01 AM CDT	Severe Thunderstorm Warning	TSA	LeFlore	48 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.