Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 12, NWS Norman, OK

February 22, 2000Tillman County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Feb 22, 2000, 4:30 PM CST for Tillman County, Oklahoma. It was in force for 30 min. 4 reports came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Feb 22, 2000, 4:30 PM CST (22:30 UTC)
Expired: Feb 22, 2000, 5:00 PM CST
In force: 30 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Tillman County, OK

What was reported inside it

Time	Report	Where	Remark
Feb 22, 4:40 PM CST	Hail 1.25	Manitou, OK
Feb 22, 4:42 PM CST	Hail 1.5	Tipton, OK
Feb 22, 4:44 PM CST	Hail 2.75	Manitou, OK
Feb 22, 4:55 PM CST	Hail 2.75	Manitou, OK	Hail the size of baseballs (2.75 inches) destroyed the windshield of a law enforecement vehicle.

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
Feb 22, 2:30 PM CST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 10.5 hours before the alert went out and 168 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: 39 J/kg
Mixed-layer CIN: -444 J/kg
Mixed-layer LCL: 626 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 186 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS54 KOUN 222231
SVROKC
OKC141-222300-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
430 PM CST TUE FEB 22 2000

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TILLMAN COUNTY IN SOUTHWEST OKLAHOMA

* UNTIL 500 PM CST

* AT 430 PM CST...DOPPLER RADAR INDICATED SEVERE THUNDERSTORMS ALONG
  A LINE EXTENDING FROM 9 MILES NORTHWEST OF MANITOU TO 3 MILES WEST
  OF MANITOU TO 10 MILES SOUTHWEST OF FREDERICK...MOVING NORTHEAST AT
  40 MPH.

* LOCATIONS IN THE WARNING INCLUDE FREDERICK...HOLLISTER...LOVELAND
  AND MANITOU

HAIL UP TO THE SIZE OF QUARTERS AND WIND GUSTS TO AT LEAST 60 MPH ARE eLIKELY.

LAT...LON 3459 9908 3446 9913 3423 9918 3424 9876
          3443 9878 3460 9888
ANDRA

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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Feb 22, 3:00 PM CST, 1 hour 30 minutes earlier.

Area forecast discussion, Feb 22, 3:00 PM CST, 1 hour 30 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
300 PM CST TUE FEB 22 2000

DRYLINE TAKING SHAPE ACROSS EASTERN THIRD OF TEXAS PANHANDLE THIS
AFTERNOON AND THIS WILL HELP TO FOCUS CONVECTION THROUGH THIS
EVENING.  MORE BREAKS IN CLOUD COVER ACROSS WESTERN OKLAHOMA AND
TEXAS COUNTIES WILL RESULT IN BETTER INSTABILITY THERE AS COLDER
AIR IN THE MID-LEVELS ARRIVES WITH SHORTWAVE.  BETTER SHEAR PROFILE
ACROSS MAINLY TEXAS COUNTIES...ALONG WITH BETTER INSTABILITY WILL PRODUCE
BEST CHANCE OF ROTATING STORMS THERE.  CLOUD COVER ACROSS CENTRAL
OKLAHOMA AND PRECIP WILL LIMIT CHANCES FOR SEVERE WEATHER BUT THREAT
OF MAINLY HAIL WILL BE POSSIBLE THROUGH ~6Z.

EXPECT STORMS TO MORE WIDESPREAD LATE THIS AFTERNOON AND EVENING
AS BEST LIFT ASSOCIATED WITH UPPER LOW APPROACHES AREA.  LOCALLY
HEAVY RAINFALL MAY ALSO OCCUR AS PW VALUES ARE RUNNING FAIRLY HIGH FOR
THIS TIME OF YEAR AND RELATIVELY SLOW MOVEMENT OF UPPER LOW.  STORM
OVER ROGER MILLS COUNTY PRODUCED .33 INCHES OF RAIN IN ABOUT 20
MINUTES.

WILL KEEP A CHANCE OF POPS IN FORECAST FOR MAINLY WEDNESDAY MORNING
AS MODELS IN AGREEMENT OF KEEPING HIGH RH'S ACROSS NORTH CENTRAL
OKLAHOMA...HOWEVER BEST LIFT WILL BE WELL TO THE EAST.

WEDNESDAY NIGHT AND THURSDAY APPEAR TO BE QUIET AT THIS POINT BEFORE
NEXT SYSTEM BRINGS A CHANCE FOR RAIN LATE THURSDAY INTO FRIDAY.
MAY HAVE TO DEAL WITH ANOTHER SEVERE WEATHER EVENT LATE THURSDAY
INTO FRIDAY WITH NEXT PACIFIC SYSTEM.  HOWEVER...CURRENT TIMING ON
THIS SYSTEM MAY LIMIT SEVERE WEATHER ACROSS CWA.  WILL GENERALLY KEEP
FORECAST FOR SATURDAY DRY FOR NOW.

NUMBERS SUBJECT TO CHANGE
FCSTID = 6/BT
OKC   51  67  43  72/  90  20   0   0
HBR   45  69  38  72/  70  10   0   0
SPS   48  73  42  76/  70  10   0   0
GAG   43  63  34  70/  70  20   0   0
PNC   51  62  41  70/  90  30   0   0
DUA   54  70  45  72/  90  20   0   0

.OUN...
OK...SEVERE THUNDERSTORM WATuCH UNTIL 1Z FOR WESTERN-THIRD OF OK.
TX...SEVERE THUNDERSTORM WATCH UNTIL 1Z FOR WESTERN NORTH TEXAS.

In the hours before

Local storm report, Feb 22, 3:04 PM CST, 1 hour 26 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
304 PM CST TUE FEB 22 2000

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

0258 PM    CR
OWELL                   TX   1.75 INCH HAIL
02/22/00   FOARD

CW

Local storm report, Feb 22, 3:38 PM CST, 52 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
338 PM CST TUE FEB 22 2000

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

0329 PM    CHILLICOTHE               TX   .75 INCH HAIL
02/22/00   HARDEMAN               REPORTED BY COUNTY EM

0335 PM    3 S CHILLICOTHE           TX  1.00 INCH HAIL
02/22/00   HARDEMAN             REPORTED BY CTY SHERIFF

JL

Local storm report, Feb 22, 3:40 PM CST, 50 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
340 PM CST TUE FEB 22 2000

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

0320 PM    CROWELL                   TX   1.75 INCH HAIL
02/22/00   FOARD                          RPT BY SHERIFF

CW

Local storm report, Feb 22, 3:50 PM CST, 40 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
350 PM CST TUE FEB 22 2000

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

0320 PM    5 SW BENJAMIN             TX   1.00 INCH HAIL
02/22/00   KNOX                           RPT BY PUBLIC

CW

Local storm report, Feb 22, 3:54 PM CST, 36 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
354 PM CST TUE FEB 22 2000

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

0348 PM    5 WNW VERNON              TX   TORNADO
02/22/00   WILBARGER                      RPT BY MEDIA STORM SPOTTER.
                                          BRIEF TOUCHDOWN.

CW

Local storm report, Feb 22, 4:10 PM CST, 20 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
410 PM CST TUE FEB 22 2000

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

0405 PM    8 SE CROWELL              TX   .75 INCH HAIL
02/22/00   FOARD

0405 PM    VERNON                    TX   .75 INCH HAIL
02/22/00   WILBARGER                            

JL

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 22, 2:03 PM CST	Severe Thunderstorm Warning	OUN	Roger Mills	42 min
Feb 22, 2:29 PM CST	Severe Thunderstorm Warning	OUN	Dewey	31 min
Feb 22, 4:05 PM CST	Tornado Warning	OUN	Jackson, Tillman	25 min
Feb 22, 4:27 PM CST	Tornado Warning	OUN	Jackson, Kiowa	48 min
Feb 22, 4:53 PM CST	Severe Thunderstorm Warning	OUN	Comanche	42 min
Feb 22, 5:02 PM CST	Severe Thunderstorm Warning	OUN	Tillman	43 min
Feb 22, 5:14 PM CST	Severe Thunderstorm Warning	OUN	Kiowa	36 min
Feb 22, 5:26 PM CST	Severe Thunderstorm Warning	OUN	Caddo, Comanche	49 min
Feb 22, 5:42 PM CST	Severe Thunderstorm Warning	OUN	Cotton	38 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2000 Every severe thunderstorm warning in 2000

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.