Alert archive / Texas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 212, NWS Norman, OK

May 24, 2002Knox County, Texas

NWS Norman, OK issued this severe thunderstorm warning at May 24, 2002, 6:13 PM CDT for Knox County, Texas. It was in force for 47 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: May 24, 2002, 6:13 PM CDT (23:13 UTC)
Expired: May 24, 2002, 7:00 PM CDT
In force: 47 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Knox County, TX

The radar

The Altus AFB radar (KFDR), 110 km from the middle of the area, began a volume at 23:16 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 24, 6:25 PM CDT	Hail 1	Gilliland, TX
May 24, 6:45 PM CDT	Hail 1	Gilliland, TX

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 24, 3:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 11.2 hours before the alert went out and 244 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: 885 J/kg
Mixed-layer CIN: -138 J/kg
Mixed-layer LCL: 503 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 185 m²/s²
0-3 km storm-relative helicity: 222 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 May 24, 2:45 PM CDT, 3 hours 28 minutes earlier.

Area forecast discussion, May 24, 2:45 PM CDT, 3 hours 28 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
245 PM CDT FRI MAY 24 2002

VERY BUSY EVENING ON TAP AS ONE SEVERE THUNDERSTORM HAD ALREADY
DEVELOPED ACROSS NORTHERN OKLAHOMA AND THIS WILL BE THE BEGINNING OF
A TREND THAT WILL CONT THROUGH MUCH OF THE UPCOMING EVENING AND
NIGHT. STORMS ARE EXPECTED TO DEVELOP ALONG COLD FRONT...WHICH IS
SLOWLY PUSHING SOUTH INTO WESTERN AND NORTHWESTERN OKLAHOMA.
INITIALLY...THESE STORMS SHOULD REMAIN MORE SCATTERED/DISCREET IN
NATURE ACROSS WRN/SWRN OK AND N TX...WHICH WILL KEEP TORNADO PROB
HIGHER THIS EVENING. AS EVENING WEARS ON SHOULD DEVELOP A LARGE
COMPLEX OF STORMS WHICH WILL MARCH SLOWLY SOUTH AND EAST ACROSS MUCH
OF THE AREA. AS EVENING WEARS ON FOCUS SHIFTS TO MORE STRONG WINDS
AND HEAVY RAIN THREATS. ALTHOUGH COULD SEE SOME ISOLATED FLASH
FLOODING...WITH ANTECEDENT CONDITIONS WHAT THEY ARE AND THAT SYSTEM
SHOULD BE PROGRESSIVE ENOUGH...DO NOT THINK IT WARRANTS FLASH FLOOD
WATCH. MUCH OF THIS ACTIVITY SHOULD BE EXITING SE OKLAHOMA SAT
MORNING AND MUCH OF THE DAY LOOKS DRY...ESPECIALLY ACROSS NW
TWO-THIRDS OF AREA.

WOULD LIKE TO BE ABLE TO FORECAST MORE SUNSHINE...BUT MOSTLY CLOUDY
LOOKS TO BE THE WAY TO GO THROUGH MUCH OF THIS PACKAGE. WILL ALSO
TRY TO REMOVE SOME POPS FOR PORTIONS OF THE AREA THIS WEEKEND...BUT
THIS LOOKS TO BE SHORT-LIVED AS MOISTURE IS NOT GOING ANYWHERE THIS
TIME AROUND AND MRF ADVERTISES CONT CHANCES THROUGH NEXT WEEK. WILL
BUY OFF ON THE MRF DEVELOPING UPPER RIDGE BY LATE IN THE WEEK AND
WILL KEEP FRI DRY FOR NOW.

FCSTID =30
OKC   61  73  58  80 / 100  30  10  20
HBR   57  75  57  81 /  80  20  20  30
SPS   64  77  61  84 /  80  40  30  30
GAG   46  75  56  80 /  60  10  10  30
PNC   54  73  55  80 / 100  10  10  20
DUA   65  76  61  81 /  70  80  30  20

.OUN...
OK...NONE
TX...NONE

In the hours before

Local storm report, May 24, 1:46 PM CDT, 4 hours 27 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
146 PM CDT FRI MAY 24 2002

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

0145 PM    3 N BRAMAN                OK   .88 INCH HAIL
05/24/02   KAY                            PUBLIC REPORT

FM

Local storm report, May 24, 3:54 PM CDT, 2 hours 19 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
354 PM CDT FRI MAY 24 2002

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

0130 AM    2 SW GOODWIN              OK   1.00 INCH HAIL
05/24/02   ELLIS                          PUBLIC REPORT

FM

Local storm report, May 24, 4:21 PM CDT, 1 hour 52 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
421 PM CDT FRI MAY 24 2002

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

0410 PM    8 NW HOLLIS               OK   .88 INCH HAIL
05/24/02   HARMON

FM

Local storm report, May 24, 4:33 PM CDT, 1 hour 40 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
433 PM CDT FRI MAY 24 2002

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

0433 PM    HOLLIS                    OK   1.00 INCH HAIL
05/24/02   HARMON                         AMATEUR RADIO SPOTTER

FM

Local storm report, May 24, 5:35 PM CDT, 38 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
535 PM CDT FRI MAY 24 2002

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

0450 PM    11 W WILLOW               OK   .88 INCH HAIL
05/24/02   GREER                          PUBLIC REPORT

0506 PM    SAYRE                     OK   .75 INCH HAIL
05/24/02   BECKHAM                        EMERGENCY MGT.

0521 PM    4 W ELK CITY              OK   1.00 INCH HAIL
05/24/02   BECKHAM                        SPOTTER REPORT

0501 PM    9 E HOLLIS                OK   .75 INCH HAIL
05/24/02   HARMON                         PUBLIC REPORT

0528 PM    QUANAH                    TX   .88 INCH HAIL
05/24/02   HARDEMAN                       AMATEUR RADIO SPOTTER

0533 PM    3 W REED                  OK   .75 INCH HAIL
05/24/02   GREER                          AMATEUR RADIO SPOTTER

FM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 9:14 PM CDT	Severe Thunderstorm Warning	OUN	Custer	46 min
May 23, 10:01 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey	59 min
May 23, 10:25 PM CDT	Severe Thunderstorm Warning	OUN	Ellis	50 min
May 23, 11:02 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Woodward	58 min
May 24, 12:17 AM CDT	Severe Thunderstorm Warning	OUN	Major	58 min
May 24, 1:23 AM CDT	Severe Thunderstorm Warning	OUN	Ellis	67 min
May 24, 2:32 AM CDT	Severe Thunderstorm Warning	OUN	Woodward	58 min
May 24, 1:18 PM CDT	Severe Thunderstorm Warning	OUN	Kay	42 min
May 24, 4:02 PM CDT	Severe Thunderstorm Warning	OUN	Harmon	43 min
May 24, 4:24 PM CDT	Severe Thunderstorm Warning	OUN	Greer	51 min
May 24, 4:45 PM CDT	Severe Thunderstorm Warning	OUN	Harmon	45 min
May 24, 4:51 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	39 min
May 24, 5:14 PM CDT	Severe Thunderstorm Warning	OUN	Greer	46 min
May 24, 5:26 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Washita	34 min
May 24, 5:31 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	44 min
May 24, 5:45 PM CDT	Severe Thunderstorm Warning	OUN	Dewey	45 min
May 24, 5:56 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Washita	49 min
May 24, 5:58 PM CDT	Severe Thunderstorm Warning	OUN	Greer	47 min
May 24, 6:05 PM CDT	Severe Thunderstorm Warning	OUN	Major	40 min
May 24, 6:16 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	44 min
May 24, 6:29 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay	61 min
May 24, 6:42 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Blaine, Major, Woods	48 min
May 24, 6:48 PM CDT	Severe Thunderstorm Warning	OUN	Washita	42 min
May 24, 5:33 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	42 min
May 24, 6:40 PM CDT	Tornado Warning	OUN	Foard, Knox	35 min
May 24, 6:49 PM CDT	Severe Thunderstorm Warning	OUN	Hardeman	41 min
May 24, 6:55 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Wilbarger	50 min

Nearby

Severe Thunderstorm Warnings in Texas, 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.