Alert archive / Arkansas / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 80, NWS Tulsa, OK

March 27, 2008Sebastian County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Mar 27, 2008, 11:27 PM CDT for Sebastian County, Arkansas. It was in force for 34 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: Mar 27, 2008, 11:27 PM CDT (04:27 UTC)
Expired: Mar 28, 2008, 12:01 AM CDT
In force: 34 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

County Sebastian County, AR

The radar

The Western Arkansas radar (KSRX), 26 km from the middle of the area, began a volume at 04:29 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.

Issued	Product	Office	Lasted
Mar 27, 4:39 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.5 hours before the alert went out and 206 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: 1283 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1560 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 204 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.1

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 280427
SVRTSA
ARC131-280530-
/O.NEW.KTSA.SV.W.0080.080328T0427Z-080328T0530Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1127 PM CDT THU MAR 27 2008

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN SEBASTIAN COUNTY IN WEST CENTRAL ARKANSAS

* UNTIL 1230 AM CDT

* AT 1123 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL AND WINDS
  TO 60 MPH. THIS STORM WAS LOCATED NEAR HARTFORD...MOVING EAST AT 30
  MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...HARTFORD...
  MIDLAND...HUNTINGTON...MANSFIELD...BURNVILLE AND WASHBURN.

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

LAT...LON 3496 9445 3512 9445 3515 9442 3522 9407
      3519 9401 3514 9403 3514 9411 3507 9418
      3507 9423 3497 9420 3494 9426
TIME...MOT...LOC 0427Z 265DEG 28KT 3505 9444

$$

2 follow-up statements

000 
WWUS54 KTSA 280449
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1150 PM CDT THU MAR 27 2008

ARC131-280530-
/O.CON.KTSA.SV.W.0080.000000T0000Z-080328T0530Z/
SEBASTIAN AR-
1150 PM CDT THU MAR 27 2008

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR SOUTHERN SEBASTIAN COUNTY...

AT 1146 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL
AND WINDS TO 60 MPH. THIS STORM WAS LOCATED NEAR MANSFIELD...MOVING
EAST AT 30 MPH.

SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...CROSSROADS...
MILLTOWN AND WASHBURN.

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

LAT...LON 3496 9431 3511 9435 3515 9430 3522 9407
      3519 9401 3514 9403 3514 9411 3507 9418
      3507 9423 3497 9420 3494 9426
TIME...MOT...LOC 0450Z 265DEG 28KT 3507 9422

$$

000 
WWUS54 KTSA 280501
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1201 AM CDT FRI MAR 28 2008

ARC131-280511-
/O.CAN.KTSA.SV.W.0080.000000T0000Z-080328T0530Z/
SEBASTIAN AR-
1201 AM CDT FRI MAR 28 2008

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SEBASTIAN COUNTY IS
CANCELLED...

THE THUNDERSTORM HAS WEAKENED BELOW SEVERE LIMITS...THEREFORE THE
SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

LAT...LON 3496 9431 3511 9435 3515 9430 3522 9407
      3519 9401 3514 9403 3514 9411 3507 9418
      3507 9423 3497 9420 3494 9426
TIME...MOT...LOC 0501Z 265DEG 28KT 3508 9412

$$

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 Mar 27, 8:55 PM CDT, 2 hours 32 minutes earlier.

Area forecast discussion, Mar 27, 8:55 PM CDT, 2 hours 32 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
855 PM CDT THU MAR 27 2008

.DISCUSSION...
FRONT CONTINUING TO MAKE ITS WAY INTO NORTHWEST ARKANSAS AND
SOUTHEAST OKLAHOMA THIS EVENING...WITH MUCH OF THE ACTIVITY NOW
ACROSS SOUTHEAST OKLAHOMA. SOME ELEVATED THUNDERSTORMS WERE
OCCURRING OVER NORTHEAST OKLAHOMA BEHIND THE BOUNDARY. ADJUSTED
TEMPS DOW SOME ACROSS THE FAR SOUTHEAST ZONES...AND ADJUSTED WINDS
SOME BASED ON CURRENT FRONTAL TRENDS. TRENDED POPS TO CHANCE
CATEGORY AFTER 06Z AS THE CHANCES FOR ELEVATED THUNDERSTORMS IN THE
COLDER AIR CONTINUE. OTHERWISE...REST OF FORECAST WILL BE LEFT AS
IS. CURRENT WATCH TO EXPIRE AT 11 PM... SO ANOTHER UPDATE WILL BE
REQUIRED AT THAT TIME.

UPDATED ZFP/PFM/AFM OUT SHORTLY.

&&

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

SHORT TERM...23

Hazardous weather outlook, Mar 27, 8:09 PM CDT, 3 hours 18 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
809 PM CDT THU MAR 27 2008

ARZ001-002-010-011-019-020-029-OKZ049-053>076-281000-
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-
809 PM CDT THU MAR 27 2008

...SEVERE STORMS CONTINUE ACROSS NORTHEAST OKLAHOMA AND NORTHWEST
   ARKANSAS...

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

.DAY ONE...REST OF TONIGHT.

SEVERE THUNDERSTORM.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS
 	ONSET...ONGOING.

 	AREA AT GREATEST RISK...NORTHEAST OKLAHOMA AND NORTHWEST
	                        ARKANSAS.

TORNADO.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS
 	ONSET...ONGOING.

 	AREA AT GREATEST RISK...NORTHEAST OKLAHOMA AND NORTHWEST
	                        ARKANSAS.

DISCUSSION...
A SURFACE COLD FRONT WAS CURRENTLY LOCATED FROM THE FAR NORTHWEST
CORNER OF ARKANSAS AND STRETCHED SOUTHWEST  THROUGH THE FAR
NORTHWEST CORNER OF PITTSBURG COUNTY THIS EVENING. SHOWERS AND
THUNDERSTORMS...SOME SEVERE HAVE CONTINUE TO DEVELOP ALONG THE FRONT
THIS EVENING  LIFTED INDICES OF -2 TO -4 ALONG WITH STEEP MID LEVEL
LAPSE RATES WILL MAINTAIN A LARGE HAIL THREAT WITH ANY SEVERE STORMS
THROUGH TONIGHT...ESPECIALLY ACROSS FAR EASTER AND PARTS OF
SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS. DEEP LAYER SHEAR REMAINS
SUFFICIENT TO SUPPORT ISOLATED SUPERCELLS THIS EVENING. A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT FOR PARTS OF FAR EASTERN
OKLAHOMA...SOUTHEAST OKLAHOMA AND NORTHWEST ARKANSAS UNTIL 11 PM.

ADDITIONAL THUNDERSTORMS WILL REMAIN POSSIBLE JUST BEHIND THE FRONT
TONIGHT AS THE BOUNDARY CONTINUES MOVING TO THE SOUTHEAST. ELEVATED
INSTABILITIES JUST BEHIND THE FRONT WILL RESULT IN A HAIL THREAT
WITH THESE STORMS.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT... SPOTTER
ACTIVATION LIKELY NEEDED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY...THUNDERSTORM POTENTIAL.
SATURDAY...THUNDERSTORM POTENTIAL.
SUNDAY...THUNDERSTORM POTENTIAL.
MONDAY...THUNDERSTORM POTENTIAL...HEAVY RAIN POTENTIAL.
TUESDAY...THUNDERSTORM POTENTIAL.
WEDNESDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
SHOWERS AND THUNDERSTORMS ASSOCIATED WITH THE COLD FRONT WILL LINGER
INTO SATURDAY AS IT STALLS OUT ACROSS CENTRAL TEXAS.

ANOTHER HEAVY RAINFALL EVENT APPEARS TO BE SHAPING UP FOR MUCH OF
THE AREA FROM SUNDAY NIGHT INTO LATE MONDAY AS ANOTHER COLD FRONT
APPROACHES THE REGION.

EMERGENCY MANAGEMENT PLANNING STATEMENT...
EMERGENCY MANAGEMENT AGENCIES SHOULD MONITOR THE LATEST FORECASTS
CONCERNING THE POTENTIAL FOR HEAVY RAINFALL BEGINNING SUNDAY NIGHT.

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

In the hours before

Local storm report, Mar 27, 8:51 PM CDT, 2 hours 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
851 PM CDT THU MAR 27 2008

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

0729 PM     HAIL             PEA RIDGE               36.45N 94.11W
03/27/2008  E0.75 INCH       BENTON             AR   PUBLIC

0740 PM     HAIL             EUFAULA                 35.29N 95.58W
03/27/2008  E0.75 INCH       MCINTOSH           OK   EMERGENCY MNGR

            DIME TO PENNY SIZE HAIL IN EUFAULA

&&

DMJ

Special weather statement, Mar 27, 8:51 PM CDT, 2 hours 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
851 PM CDT THU MAR 27 2008

OKZ073-280215-
PITTSBURG OK-
851 PM CDT THU MAR 27 2008

...SIGNIFICANT WEATHER ALERT...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ALERT EFFECTIVE UNTIL 915 PM CDT
FOR THE FOLLOWING COUNTY...

IN SOUTHEAST OKLAHOMA
     SOUTHERN PITTSBURG

AT 851 PM CDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 3 MILES
NORTHWEST OF ASHLAND...MOVING EAST AT 25 MPH. SOME LOCATIONS THAT
WILL BE AFFECTED BY THIS STORM INCLUDE...KIOWA...PITTSBURG...
BLANCO...ASHLAND AND SAVANNA.

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.

LAT...LON 3468 9610 3488 9608 3487 9569 3465 9569
TIME...MOT...LOC 0151Z 274DEG 25KT 3479 9607

Local storm report, Mar 27, 9:10 PM CDT, 2 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TULSA OK
910 PM CDT THU MAR 27 2008

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

0612 PM     HAIL             5 SSE GROVE             36.53N 94.73W
03/27/2008  E1.25 INCH       DELAWARE           OK   EMERGENCY MNGR

            PEA TO HALF DOLLAR SIZE HAIL SSE OF GROVE

&&

MEP

Local storm report, Mar 27, 10:43 PM CDT, 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1043 PM CDT THU MAR 27 2008

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

1040 PM     HAIL             HOWE                    34.95N 94.64W
03/27/2008  E0.88 INCH       LE FLORE           OK   AMATEUR RADIO

1040 PM     HAIL             WISTER                  34.97N 94.72W
03/27/2008  E0.88 INCH       LE FLORE           OK   AMATEUR RADIO

&&

DMJ

Local storm report, Mar 27, 10:50 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1050 PM CDT THU MAR 27 2008

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

1048 PM     HAIL             POTEAU                  35.05N 94.62W
03/27/2008  E0.88 INCH       LE FLORE           OK   EMERGENCY MNGR

1049 PM     HAIL             POTEAU                  35.05N 94.62W
03/27/2008  E0.88 INCH       LE FLORE           OK   AMATEUR RADIO

&&

DMJ

Local storm report, Mar 27, 10:58 PM CDT, 29 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1058 PM CDT THU MAR 27 2008

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

1048 PM     HAIL             7 SE POTEAU             34.98N 94.54W
03/27/2008  E0.88 INCH       LE FLORE           OK   AMATEUR RADIO

            NICKEL SIZE HAIL REPORTED SOUTHEAST OF POTEAU IN THE CITY
            OF MONROE

&&

DMJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 7:43 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll	47 min
Mar 27, 8:40 PM CDT	Special Weather Statement	TSA	Carroll	35 min
Mar 27, 10:29 PM CDT	Severe Thunderstorm Warning	TSA	Sebastian	46 min
Mar 27, 11:44 PM CDT	Special Weather Statement	TSA	Carroll	61 min
Mar 28, 1:05 AM CDT	Special Weather Statement	TSA	Madison	25 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.