Alert archive / Arkansas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 133, NWS Tulsa, OK

May 9, 2002Franklin County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at May 9, 2002, 4:09 AM CDT for Franklin County, Arkansas. It was in force for 66 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: May 9, 2002, 4:09 AM CDT (09:09 UTC)
Expired: May 9, 2002, 5:15 AM CDT
In force: 66 min
Issued by: NWS Tulsa, OK
Area: Whole counties

County Franklin County, AR

The radar

The Western Arkansas radar (KSRX), 49 km from the middle of the area, began a volume at 09:13 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 9, 4:22 AM CDT	Hail 1.75	Charleston, AR

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

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 9, 1:15 AM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 9.2 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-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: 1675 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 285 m²/s²
0-3 km storm-relative helicity: 375 m²/s²
Significant tornado parameter: 2.9
Supercell composite: 13.6

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KTSA 090909
SVRTUL
ARC047-091015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
408 AM CDT THU MAY 9 2002

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR
  FRANKLIN COUNTY IN WEST CENTRAL ARKANSAS

* UNTIL 515 AM CDT

* AT 408 AM CDT...DOPPLER RADAR INDICATED A DANGEROUS SEVERE
  THUNDERSTORM 17 MILES WEST OF BRANCH...MOVING EAST AT 50 MPH. RADAR
  INDICATED SOME ROTATION WITH THIS STORM. PEOPLE NEAR ITS PATH
  SHOULD MOVE TO A SAFE PLACE NOW

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...  OZARK...
  BRANCH...DENNING...ALTUS AND WIEDERKEHR VILLAGE.

STORM SPOTTERS REPORTED HAIL TO AT LEAST HALF DOLLAR SIZE WITH THIS 
STORM NEAR GREENWOOD IN SEBASTIAN COUNTY.

HAIL TO THE SIZE OF GOLFBALLS AND WIND GUSTS TO 65 MPH CAN BE 
EXPECTED IN THE WARNED AREA. IF YOU ARE IN OR NEAR THE PATH OF THIS 
STORM...TAKE COVER NOW

$$

MANNING

LAT...LON 3552 9404 3520 9410 3530 9369 3550 9369

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 9, 3:40 AM CDT, 29 minutes earlier.

Area forecast discussion, May 9, 3:40 AM CDT, 29 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
340 AM CDT THU MAY 9 2002

SQUALL LINE CONTINUES TO MOVE SOUTHEAST THIS MORNING ACROSS
SE OK/NW ARK...WITH NUMEROUS REPORTS OF HIGH WIND/SEVERE HAIL ALONG
LINE. SEVERE THREAT WILL CONTINUE FOR THE NEXT FEW HOURS...BEFORE
LINE PUSHES EAST OF AREA AROUND 600 AM.  COLD FRONT CURRENTLY
LOCATED ACROSS NE OK...EXTENDING SW TO NEAR SPS.  MAIN FORECAST
CONCERN TODAY WILL BE CLOUD COVER/TEMPS. SKIES SHOULD CLEAR OVER
NORTHERN ZONES...BUT WILL LIKELY HANG ON OVER SOUTHEAST OKLAHOMA AS
FRONT SLOWS NEAR THE ARK/LA/TX REGION...BEFORE STALLING TONIGHT.

DECENT WAA/ISENTROPIC LIFT QUICKLY DEVELOPS NORTH OF THE FRONT
TONIGHT. COULD SEE RAIN WITH A FEW EMBEDDED THUNDERSTORMS DEVELOP
AFTER MIDNIGHT ACROSS NW ARK...SPREADING ACROSS REMAINDER OF NE
OK FRIDAY MORNING.  WITH THE EXPECTED PRECIP/EXTENSIVE CLOUD COVER
ON FRIDAY...TEMPS SHOULD REMAIN IN THE 60S NORTH OF THE FRONT.
WARM FRONT FORECAST TO LIFT NORTH FRIDAY NIGHT WITH OVERNIGHT LOWS
NOT DROPPING OFF SIGNIFICANTLY.  AS STRONG LOW LEVEL JET DEVELOPS
FRIDAY NIGHT...ELEVATED CONVECTION EXPECTED TO DEVELOP NORTH OF
LIFTING WARM FRONT OVER CENTRAL OKLAHOMA.   MAIN CONVECTION MAY STAY
NORTHWEST OF AREA...SO WILL ONLY CARRY LOW CHANCE POPS OVER NW OK
FOR NOW.

NEXT COLD FRONT EXPECTED LATE SATURDAY NIGHT INTO SUNDAY WITH
THUNDERSTORM LIKELY ALONG FRONT.

FCSTID = 12

TUL   70  52  68  66 /   0  20  30  30
FSM   72  56  66  59 /  20  30  30  10
MLC   71  57  71  65 /  10  20  30  10
BVO   70  47  67  65 /   0  20  30  40
FYV   67  49  62  58 /  10  30  30  10
BYV   67  49  62  58 /  10  30  30  10
MIO   69  47  66  64 /   0  20  30  10
MKO   70  54  67  63 /   0  20  30  10
F10   70  52  68  66 /   0  20  30  10
HHW   74  61  76  67 /  20  20  30  10

.TSA...
AR...NONE.
OK...NONE.

In the hours before

Special weather statement, May 9, 3:43 AM CDT, 26 minutes before

ARZ010-011-019-020-029-OKZ049-060-064>076-090900-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
343 AM CDT THU MAY 9 2002

SEVERE THUNDERSTORM WATCH #264 HAS BEEN REMOVED FROM THE FOLLOWING
AREAS...TULSA...CREEK...WAGONER...OKMULGEE AND OKFUSKEE...

SEVERE THUNDERSTORM WATCH #264 REMAINS IN EFFECT FOR...MADISON...
WASHINGTON...FRANKLIN...CRAWFORD...SEBASTIAN...CHEROKEE...ADAIR...
MUSKOGEE...SEQUOYAH...MCINTOSH...HASKELL...LE FLORE...PITTSBURG...
LATIMER AND PUSHMATAHA COUNTIES...

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 11:40 PM CDT	Severe Thunderstorm Warning	TSA	Benton, Carroll, Madison, Washington	65 min
May 9, 12:44 AM CDT	Severe Thunderstorm Warning	TSA	Carroll, Madison, Washington	61 min
May 9, 2:45 AM CDT	Severe Thunderstorm Warning	TSA	Benton, Washington	45 min
May 9, 3:35 AM CDT	Tornado Warning	TSA	Crawford, Sebastian	55 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2002 Every severe thunderstorm warning in 2002

Sources

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