Alert archive / Arkansas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 9, NWS Tulsa, OK

January 21, 1999Franklin County, Arkansas

NWS Tulsa, OK issued this severe thunderstorm warning at Jan 21, 1999, 6:53 PM CST for Franklin County, Arkansas. It was in force for 52 min. 2 reports 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: Jan 21, 1999, 6:53 PM CST (00:53 UTC)
Expired: Jan 21, 1999, 7:45 PM CST
In force: 52 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 00:54 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
Jan 21, 7:40 PM CST	Hail 1	Ozark, AR
Jan 21, 7:45 PM CST	Hail 1	Altus, 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
Jan 21, 5:00 PM CST	Tornado Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.9 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: 852 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 1195 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 140 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTUL 220058
SVRTUL
ARC047-220145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
653 PM CST THU JAN 21 1999

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FRANKLIN COUNTY IN NORTHWEST ARKANSAS
  
* UNTIL 745 PM CST

* AT 653 PM CST A SEVERE THUNDERSTORM WAS LOCATED OVER GREENWOOD...
  MOVING NORTHEAST AT 25 MPH.

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

STORM SPOTTERS REPORTED QUARTER TO GOLFBALL SIZED HAIL IN HACKETT AT 
640 PM AS THE STORM PASSED THROUGH THAT AREA.

HAIL TO THE SIZE OF GOLFBALLS AND WIND GUSTS TO 60 MPH CAN BE 
EXPECTED IN THE WARNED AREA.

A TORNADO WATCH IS ALSO IN EFFECT. TORNADOES CAN DEVELOP SUDDENLY
FROM SEVERE THUNDERSTORMS. BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS.

LAT...LON 3521 9427 3514 9422 l3545 9370 3563 9392

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 Jan 21, 4:50 PM CST, 2 hours 3 minutes earlier.

Area forecast discussion, Jan 21, 4:50 PM CST, 2 hours 3 minutes before

EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
450 PM CST THU JAN 21 1999

JUST UPDATED TO ADD MENTION OF SEVERE IN A FEW ZONE GROUPINGS GIVEN
THE AREAL EXTENT OF THE NEW TORNADO WATCH BOX.  NEW RUN OF THE 21Z
RUC SHOWS LIFTED INDICES OF -10 IN SOUTHEAST OKLAHOMA AT 06Z.  MAY
NEED TO UPDATE AGAIN LATER ON TO EXTEND MENTION OF SEVERE INTO LATER
TONIGHT.

22

.TUL...
OK...NONE.
AR...NONE.

In the hours before

Special weather statement, Jan 21, 1:00 PM CST, 5 hours 53 minutes before

ARZ001-002-010-011-019-020-029-OKZ049-053>076-221200-

EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CST THU JAN 21 1999

A FEW SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS NORTHWEST ARKANSAS
AND FAR SOUTHEAST OKLAHOMA LATE THIS AFTERNOON AND EARLY
TONIGHT...MAINLY EAST OF A GRAVETTE ARKANSAS TO HUGO OKLAHOMA LINE.

A STRONG UPPER LEVEL SYSTEM WILL APPROACH OKLAHOMA AND ARKANSAS
TONIGHT AND FRIDAY. IN ADVANCE OF THIS SYSTEM...UNSEASONABLY WARM
AND HUMID AIR WILL CONTINUE TO ADVECT NORTHWARD INTO EASTERN
OKLAHOMA AND NORTHWEST ARKANSAS. A STATIONARY FRONT WAS LOCATED
EARLY THIS AFTERNOON FROM COFFEYVILLE KANSAS TO PAWNEE OKLAHOMA. A
DRY LINE ALSO EXTENDED SOUTHWARD FROM THE STATIONARY FRONT FROM NEAR
VINITA TO ARDMORE OKLAHOMA. THE STATIONARY FRONT IS EXPECTED TO MOVE
A LITTLE SOUTH THIS AFTERNOON AND TONIGHT WHILE THE DRYLINE MOVES
FAIRLY RAPIDLY EASTWARD THIS AFTERNOON...ESPECIALLY ACROSS SOUTHERN
OKLAHOMA. THE STATIONARY FRONT AS WELL AS THE DRYLINE MAY PROVIDE
ENOUGH LIFT FOR THUNDERSTORMS TO DEVELOP ACROSS THE AREA THIS
AFTERNOON AND TONIGHT.

THUNDERSTORMS WILL CONTINUE TO DEVELOP NORTH OF THE STATIONARY FRONT
ACROSS SOUTHEAST KANSAS AND CENTRAL MISSOURI THIS AFTERNOON. THESE
STORMS ARE EXPECTED TO REMAIN MOSTLY NORTH OF THE AREA THIS
AFTERNOON...HOWEVER A FEW MAY BUILD SOUTHWESTWARD INTO NORTHEAST
OKLAHOMA TONIGHT. IF THESE STORMS DEVELOP SOUTH...THEY WILL BE
CAPABLE OF PRODUCING SOME HAIL AND LOCALLY GUSTY WINDS. RELATIVELY
LOW INSTABILITY IN THIS AREA WILL LIKELY PREVENT THE DEVELOPMENT OF
WIDESPREAD SEVERE THUNDERSTORMS.

JUST AHEAD OF THE DRYLINE AND STATIONARY FRONT...THERE MAY BE ENOUGH
LIFT FOR THUNDERSTORMS TO DEVELOP. THE AMOUNT OF LIFT IN THIS AREA
IS MUCH WEAKER BUT DUE TO THE HIGHER AMOUNT OF INSTABILITY PRESENT
...ANY THUNDERSTORMS THAT DEVELOP IN THIS AREA WILL LIKLEY BECOME
SEVERE WITH LARGE HAIL AND LOCALLY DAMAGING WINDS POSSIBLE.  THE
EXPECTED VERTICAL WIND PROFILE AND AMOUNT OF INSTABILITY IS
SUFFICIENT FOR THE DEVELOPMENT OF SUPERCELL THUNDERSTORMS ACROSS
AREAS GENERALLY EAST OF A GRAVETTE TO HUGO LINE THIS AFTERNOON AND
EARLY TONIGHT.  THE GREATEST THREAT OF TORNADOES AT THIS TIME
APPEARS TO BE OVER AREAS FURTHER SOUTH AND EAST LATER TONIGHT...OVER
CENTRAL AND SOUTHERN ARKANSAS AND MUCH OF LOUISIANA AND EXTREME
EASTERN TEXAS.

THE UPPER LEVEL SYSTEM WILL INTENSIFY AND MOVE EAST OF THE AREA
EARLY FRIDAY...TAKING WITH IT ANY CHANCE OF SEVERE THUNDERSTORMS.
RAIN MAY POSSIBLY CHANGE TO LIGHT SNOW BEFORE ENDING LATE FRIDAY NIGHT.

THIS OUTLOOK IS INTENDED TO PROVIDE GUIDANCE TO EMERGENCY MANAGEMENT
AGENCIES AND STORM SPOTTER GROUPS CONCERNING TORNADOES...SEVERE
THUNDERSTORMS...HIGH WIND EVENTS...FLOODING AND WINTER WEATHER.
INFORMATION CONCERNING OTHER HAZARDS CAN BE FOUND IN OTHER PRODUCTS
ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN TULSA.

Special weather statement, Jan 21, 1:00 PM CST, 5 hours 53 minutes before

ARZ001-002-010-011-019-020-029-OKZ049-053>076-221200-

EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CST THU JAN 21 1999

A FEW SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS NORTHWEST ARKANSAS
AND FAR SOUTHEAST OKLAHOMA LATE THIS AFTERNOON AND EARLY
TONIGHT...MAINLY EAST OF A GRAVETTE ARKANSAS TO HUGO OKLAHOMA LINE.

A STRONG UPPER LEVEL SYSTEM WILL APPROACH OKLAHOMA AND ARKANSAS
TONIGHT AND FRIDAY. IN ADVANCE OF THIS SYSTEM...UNSEASONABLY WARM
AND HUMID AIR WILL CONTINUE TO ADVECT NORTHWARD INTO EASTERN
OKLAHOMA AND NORTHWEST ARKANSAS. A STATIONARY FRONT WAS LOCATED
EARLY THIS AFTERNOON FROM COFFEYVILLE KANSAS TO PAWNEE OKLAHOMA. A
DRY LINE ALSO EXTENDED SOUTHWARD FROM THE STATIONARY FRONT FROM NEAR
VINITA TO ARDMORE OKLAHOMA. THE STATIONARY FRONT IS EXPECTED TO MOVE
A LITTLE SOUTH THIS AFTERNOON AND TONIGHT WHILE THE DRYLINE MOVES
FAIRLY RAPIDLY EASTWARD THIS AFTERNOON...ESPECIALLY ACROSS SOUTHERN
OKLAHOMA. THE STATIONARY FRONT AS WELL AS THE DRYLINE MAY PROVIDE
ENOUGH LIFT FOR THUNDERSTORMS TO DEVELOP ACROSS THE AREA THIS
AFTERNOON AND TONIGHT.

THUNDERSTORMS WILL CONTINUE TO DEVELOP NORTH OF THE STATIONARY FRONT
ACROSS SOUTHEAST KANSAS AND CENTRAL MISSOURI THIS AFTERNOON. THESE
STORMS ARE EXPECTED TO REMAIN MOSTLY NORTH OF THE AREA THIS
AFTERNOON...HOWEVER A FEW MAY BUILD SOUTHWESTWARD INTO NORTHEAST
OKLAHOMA TONIGHT. IF THESE STORMS DEVELOP SOUTH...THEY WILL BE
CAPABLE OF PRODUCING SOME HAIL AND LOCALLY GUSTY WINDS. RELATIVELY
LOW INSTABILITY IN THIS AREA WILL LIKELY PREVENT THE DEVELOPMENT OF
WIDESPREAD SEVERE THUNDERSTORMS.

JUST AHEAD OF THE DRYLINE AND STATIONARY FRONT...THERE MAY BE ENOUGH
LIFT FOR THUNDERSTORMS TO DEVELOP. THE AMOUNT OF LIFT IN THIS AREA
IS MUCH WEAKER BUT DUE TO THE HIGHER AMOUNT OF INSTABILITY PRESENT
...ANY THUNDERSTORMS THAT DEVELOP IN THIS AREA WILL LIKLEY BECOME
SEVERE WITH LARGE HAIL AND LOCALLY DAMAGING WINDS POSSIBLE.  THE
EXPECTED VERTICAL WIND PROFILE AND AMOUNT OF INSTABILITY IS
SUFFICIENT FOR THE DEVELOPMENT OF SUPERCELL THUNDERSTORMS ACROSS
AREAS GENERALLY EAST OF A GRAVETTE TO HUGO LINE THIS AFTERNOON AND
EARLY TONIGHT.  THE GREATEST THREAT OF TORNADOES AT THIS TIME
APPEARS TO BE OVER AREAS FURTHER SOUTH AND EAST LATER TONIGHT...OVER
CENTRAL AND SOUTHERN ARKANSAS AND MUCH OF LOUISIANA AND EXTREME
EASTERN TEXAS.

THE UPPER LEVEL SYSTEM WILL INTENSIFY AND MOVE EAST OF THE AREA
EARLY FRIDAY...TAKING WITH IT ANY CHANCE OF SEVERE THUNDERSTORMS.
RAIN MAY POSSIBLY CHANGE TO LIGHT SNOW BEFORE ENDING LATE FRIDAY NIGHT.

THIS OUTLOOK IS INTENDED TO PROVIDE GUIDANCE TO EMERGENCY MANAGEMENT
AGENCIES AND STORM SPOTTER GROUPS CONCERNING TORNADOES...SEVERE
THUNDERSTORMS...HIGH WIND EVENTS...FLOODING AND WINTER WEATHER.
INFORMATION CONCERNING OTHER HAZARDS CAN BE FOUND IN OTHER PRODUCTS
ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN TULSA.

Special weather statement, Jan 21, 1:00 PM CST, 5 hours 53 minutes before

ARZ001-002-010-011-019-020-029-OKZ049-053>076-221200-

EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
100 PM CST THU JAN 21 1999

A FEW SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS NORTHWEST ARKANSAS
AND FAR SOUTHEAST OKLAHOMA LATE THIS AFTERNOON AND EARLY
TONIGHT...MAINLY EAST OF A GRAVETTE ARKANSAS TO HUGO OKLAHOMA LINE.

A STRONG UPPER LEVEL SYSTEM WILL APPROACH OKLAHOMA AND ARKANSAS
TONIGHT AND FRIDAY. IN ADVANCE OF THIS SYSTEM...UNSEASONABLY WARM
AND HUMID AIR WILL CONTINUE TO ADVECT NORTHWARD INTO EASTERN
OKLAHOMA AND NORTHWEST ARKANSAS. A STATIONARY FRONT WAS LOCATED
EARLY THIS AFTERNOON FROM COFFEYVILLE KANSAS TO PAWNEE OKLAHOMA. A
DRY LINE ALSO EXTENDED SOUTHWARD FROM THE STATIONARY FRONT FROM NEAR
VINITA TO ARDMORE OKLAHOMA. THE STATIONARY FRONT IS EXPECTED TO MOVE
A LITTLE SOUTH THIS AFTERNOON AND TONIGHT WHILE THE DRYLINE MOVES
FAIRLY RAPIDLY EASTWARD THIS AFTERNOON...ESPECIALLY ACROSS SOUTHERN
OKLAHOMA. THE STATIONARY FRONT AS WELL AS THE DRYLINE MAY PROVIDE
ENOUGH LIFT FOR THUNDERSTORMS TO DEVELOP ACROSS THE AREA THIS
AFTERNOON AND TONIGHT.

THUNDERSTORMS WILL CONTINUE TO DEVELOP NORTH OF THE STATIONARY FRONT
ACROSS SOUTHEAST KANSAS AND CENTRAL MISSOURI THIS AFTERNOON. THESE
STORMS ARE EXPECTED TO REMAIN MOSTLY NORTH OF THE AREA THIS
AFTERNOON...HOWEVER A FEW MAY BUILD SOUTHWESTWARD INTO NORTHEAST
OKLAHOMA TONIGHT. IF THESE STORMS DEVELOP SOUTH...THEY WILL BE
CAPABLE OF PRODUCING SOME HAIL AND LOCALLY GUSTY WINDS. RELATIVELY
LOW INSTABILITY IN THIS AREA WILL LIKELY PREVENT THE DEVELOPMENT OF
WIDESPREAD SEVERE THUNDERSTORMS.

JUST AHEAD OF THE DRYLINE AND STATIONARY FRONT...THERE MAY BE ENOUGH
LIFT FOR THUNDERSTORMS TO DEVELOP. THE AMOUNT OF LIFT IN THIS AREA
IS MUCH WEAKER BUT DUE TO THE HIGHER AMOUNT OF INSTABILITY PRESENT
...ANY THUNDERSTORMS THAT DEVELOP IN THIS AREA WILL LIKLEY BECOME
SEVERE WITH LARGE HAIL AND LOCALLY DAMAGING WINDS POSSIBLE.  THE
EXPECTED VERTICAL WIND PROFILE AND AMOUNT OF INSTABILITY IS
SUFFICIENT FOR THE DEVELOPMENT OF SUPERCELL THUNDERSTORMS ACROSS
AREAS GENERALLY EAST OF A GRAVETTE TO HUGO LINE THIS AFTERNOON AND
EARLY TONIGHT.  THE GREATEST THREAT OF TORNADOES AT THIS TIME
APPEARS TO BE OVER AREAS FURTHER SOUTH AND EAST LATER TONIGHT...OVER
CENTRAL AND SOUTHERN ARKANSAS AND MUCH OF LOUISIANA AND EXTREME
EASTERN TEXAS.

THE UPPER LEVEL SYSTEM WILL INTENSIFY AND MOVE EAST OF THE AREA
EARLY FRIDAY...TAKING WITH IT ANY CHANCE OF SEVERE THUNDERSTORMS.
RAIN MAY POSSIBLY CHANGE TO LIGHT SNOW BEFORE ENDING LATE FRIDAY NIGHT.

THIS OUTLOOK IS INTENDED TO PROVIDE GUIDANCE TO EMERGENCY MANAGEMENT
AGENCIES AND STORM SPOTTER GROUPS CONCERNING TORNADOES...SEVERE
THUNDERSTORMS...HIGH WIND EVENTS...FLOODING AND WINTER WEATHER.
INFORMATION CONCERNING OTHER HAZARDS CAN BE FOUND IN OTHER PRODUCTS
ISSUED BY THE NATIONAL WEATHER SERVICE OFFICE IN TULSA.

Local storm report, Jan 21, 4:42 PM CST, 2 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
442 PM CST THU JAN 21 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0423 PM    STANLEY                   OK   1 INCH HAIL
01/21/99   PUSHMATAHA                     REPORTED BY CLAYTON CD
                                          DIRECTOR

Local storm report, Jan 21, 5:41 PM CST, 1 hour 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
541 PM CST THU JAN 21 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0529 PM    BENGAL                    OK   1 INCH HAIL
01/21/99   LATIMER                        REPORTED BY AMATEUR RADIO
                                          SPOTTER

Local storm report, Jan 21, 6:05 PM CST, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
605 PM CST THU JAN 21 1999

TIME(CST)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0545 PM    LEFLORE                   OK   1 INCH HAIL
01/21/99   LE FLORE                       REPORTED BY PUBLIC

0554 PM    WISTER                    OK   1.75 INCH HAIL
01/21/99   LE FLORE                       REPORTED BY AMATEUR
                                          RADIO SPOTTER

0553 PM    8 SW CLAYTON              OK   0.75 INCH HAIL
01/21/99   PUSHMATAHA                       REPORTED BY AMATEUR
                                          RADIO SPOTTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 6:11 PM CST	Tornado Warning	TSA	Sebastian	34 min
Jan 21, 6:41 PM CST	Tornado Warning	TSA	Sebastian	34 min
Jan 21, 7:12 PM CST	Tornado Warning	TSA	Franklin, Sebastian	48 min
Jan 21, 7:20 PM CST	Severe Thunderstorm Warning	TSA	Sebastian	40 min
Jan 21, 7:37 PM CST	Tornado Warning	TSA	Sebastian	38 min
Jan 21, 8:13 PM CST	Tornado Warning	TSA	Franklin, Sebastian	47 min
Jan 21, 9:45 PM CST	Severe Thunderstorm Warning	TSA	Sebastian	45 min
Jan 21, 10:21 PM CST	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Sebastian	24 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 1999 Every severe thunderstorm warning in 1999

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.