Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 121, NWS Norman, OK

May 5, 2002Greer County, Harmon County, Jackson County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 5, 2002, 10:31 PM CDT for Greer County, Harmon County, Jackson County, Oklahoma. It was in force for 44 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: May 5, 2002, 10:31 PM CDT (03:31 UTC)
Expired: May 5, 2002, 11:15 PM CDT
In force: 44 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

Counties Greer County, OK, Harmon County, OK, Jackson County, OK

The radar

The Altus AFB radar (KFDR), 73 km from the middle of the area, began a volume at 03:33 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
May 5, 7:30 PM CDT	Tornado Watch	SPC	4 hr

The text

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

000 
WUUS54 KOUN 060331
SVROKC
OKC055-057-065-060415-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORMAN OK
1030 PM CDT SUN MAY 5 2002

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GREER COUNTY IN SOUTHWEST OKLAHOMA
  HARMON COUNTY IN SOUTHWEST OKLAHOMA
  NORTHERN JACKSON COUNTY IN SOUTHWEST OKLAHOMA

* UNTIL 1115 PM CDT

* AT 1030 PM CDT...DOPPLER RADAR DETECTED A SEVERE THUNDERSTORM 5
  MILES NORTHEAST OF MCQUEEN...MOVING EAST AT 35 MPH.

* LOCATIONS IN THE WARNING INCLUDE ALTUS AIR FORCE BASE...ALTUS...
  BLAIR...DUKE...FRIENDSHIP...GOULD...MARTHA...MCKNIGHT...MCQUEEN AND
  WARREN

HAIL UP TO THE SIZE OF GOLFBALLS IS LIKELY WITH THIS SEVERE THUNDERSTORM.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH NO ADVANCE WARNING.
MOVE IMMEDIATELY TO A STORM SHELTER... BASEMENT OR STURDY BUILDING IF
A TORNADO IS SIGHTED.

LAT...LON 3481 9998 3462 9988 3460 9919 3480 9918

WR

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 5, 5:00 PM CDT, 5 hours 31 minutes earlier.

Area forecast discussion, May 5, 5:00 PM CDT, 5 hours 31 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
500 PM CDT SUN MAY 5 2002

TSTMS FIRING IN VICINITY OF DRYLINE OVER TX/OK PANHANDLES WILL MOVE
EAST INTO WESTERN PORTION OF THE FA THIS EVENING. MEANWHILE...
WEAKENING BOUNDARY ACROSS NORTH TEXAS NOT SHOWING MUCH ENHANCEMENT
IN THE CU FIELD AT THIS TIME... SUGGESTING DRYLINE INDUCED
CONVECTION MAY BE THE PRIMARY SHOW. WILL GO HIGHEST POPS OVER THE
WEST OVERNIGHT AND GENERALLY AROUND 40 PERCENT OVER CENTRAL
SECTIONS. IF CURRENT TX CONVECTION EVOLVES INTO AN MCS... MAY NEED
TO RAISE POPS OVER CENTRAL SECTIONS FOR LATE TONIGHT. LOOKS LIKE
DRYLINE MAY CONTINUE TO BE ACTIVE NEXT COUPLE OF DAYS WITH AFTERNOON
AND EVENING TSTMS POSSIBLY MAINLY ACROSS THE WESTERN SECTIONS. MID
LEVEL TEMPS WILL BE WARMING DURING THIS PERIOD... WHICH COULD LIMIT
COVERAGE AND EASTERN EXTENT OF STORMS.

IN THE LONGER TERM... ACOLD FRONT IS STILL ON TRACK TO MOVE INTO
CENTRAL OKLAHOMA LATE WED AFTN AND INTO NORTH TEXAS BY THURS MORNING
WHERE IT IS FCST TO BECOME STATIONARY. WILL CONTINUE WITH THE
CURRENT FCST OF A CHANCE OF TSTMS ON WEDNESDAY IN MOST AREAS. WILL
ALSO MAINTAIN A POSSIBILITY FOR TSTMS ON THURSDAY IN THE SOUTHERN
ZONES DUE TO THE FRONT STALLING OUT JUST SOUTH OF THE CWA WHILE 850
MB WINDS ARE FORECAST TO REMAIN SOUTHERLY ABOVE THE FRONTAL
INVERSION. COULD BE SOME ELEVATED STORMS EARLY FRIDAY WITH WARM
ADVECTION PATTERN SPREADING ACROSS THE REMAINDER OF THE AREA. BEST
CHANCES FOR STORMS FRIDAY AND SATURDAY WILL BE IN THE AFTN/EVE HOURS
IN THE WEST WHERE DRYLINE MAY BECOME MORE ACTIVE AHEAD OF AN UPPER
TROUGH MOVING INTO THE SOUTHWEST US. STORMS POSSIBLE AGAIN MOST
PLACES ON SUNDAY WITH ANOTHER FRONT MOVING INTO THE REGION. FRONT
WILL COOL TEMPS A COUPLE CATEGORIES WED AND THURSDAY...BEFORE
WARMING BACK UP STARTING FRIDAY.

FCSTID = 32
OKC   67  85  67  86 /  40  10  10   0
HBR   66  89  66  90 /  60  20  20  20
SPS   68  88  69  89 /  50  10  10   0
GAG   61  89  63  90 /  60  30  30  20
PNC   65  85  65  87 /  40  10  10   0
DUA   69  86  70  87 /  40  10  10   0

.OUN...
OK...NONE.

TX...NONE.

In the hours before

Local storm report, May 5, 8:59 PM CDT, 1 hour 32 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
859 PM CDT SUN MAY 05 2002

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

0850 PM    5 W VICI                  OK   1.00 INCH HAIL
05/05/02   DEWEY                          SPOTTER REPORT

JLP

Local storm report, May 5, 9:09 PM CDT, 1 hour 22 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
909 PM CDT SUN MAY 05 2002

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

0900 PM    4 S VICI                  OK   1.00 INCH HAIL
05/05/02   DEWEY                          SPOTTER REPORT

0904 PM    VICI                      OK   .75 INCH HAIL
05/05/02   DEWEY                          SPOTTER REPORT

JLP

Local storm report, May 5, 9:37 PM CDT, 54 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
937 PM CDT SUN MAY 05 2002

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

0905 PM    4 NW CAMARGO              OK   60 MPH WIND GUST
05/05/02   DEWEY                          MEASURED BY OKLAHOMA
                                          MESONET

JLP

Local storm report, May 5, 9:40 PM CDT, 51 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
940 PM CDT SUN MAY 05 2002

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

0939 PM    SEILING                   OK   .75 INCH HAIL
05/05/02   DEWEY                          REPORTED BY SEILING FD

JLP

Local storm report, May 5, 10:15 PM CDT, 16 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1015 PM CDT SUN MAY 05 2002

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

1010 PM    4 E SEILING               OK   TORNADO
05/05/02   DEWEY                          HOUSE DAMAGED
                                          REPORTED BY SHERIFFS
                                          OFFICE.

JLP

Local storm report, May 5, 10:27 PM CDT, 4 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1027 PM CDT SUN MAY 05 2002

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

1023 PM    GRANITE                   OK   1.00 INCH HAIL
05/05/02   GREER                          REPORTED BY GREER COUNTY EM

JLP

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 7:32 PM CDT	Tornado Warning	OUN	Ellis, Roger Mills	43 min
May 5, 8:10 PM CDT	Tornado Warning	OUN	Ellis, Roger Mills	50 min
May 5, 8:37 PM CDT	Tornado Warning	OUN	Dewey	38 min
May 5, 8:39 PM CDT	Tornado Warning	OUN	Dewey	36 min
May 5, 9:12 PM CDT	Tornado Warning	OUN	Dewey	48 min
May 5, 9:25 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woodward	50 min
May 5, 9:51 PM CDT	Tornado Warning	OUN	Harmon	39 min
May 5, 10:02 PM CDT	Tornado Warning	OUN	Dewey	28 min
May 5, 10:12 PM CDT	Tornado Warning	OUN	Major	33 min
May 5, 10:21 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Kiowa	29 min
May 5, 10:44 PM CDT	Tornado Warning	OUN	Blaine, Major	46 min
May 5, 10:49 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa, Washita	41 min
May 5, 11:17 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Kiowa	43 min
May 5, 11:44 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Washita	46 min
May 6, 12:28 AM CDT	Severe Thunderstorm Warning	OUN	Washita	32 min
May 6, 12:35 AM CDT	Severe Thunderstorm Warning	OUN	Caddo	40 min
May 6, 1:09 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady, Oklahoma	51 min
May 6, 1:34 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	41 min
May 6, 2:16 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln	29 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 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; radar from the NEXRAD Level II archive.