Alert archive / Texas / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 167, NWS Norman, OK

May 7, 2001Archer County, Baylor County, Texas

NWS Norman, OK issued this severe thunderstorm warning at May 7, 2001, 5:18 AM CDT for Archer County, Baylor County, Texas. It was in force for 42 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 7, 2001, 5:18 AM CDT (10:18 UTC)
Expired: May 7, 2001, 6:00 AM CDT
In force: 42 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Archer County, TX, Baylor County, TX

What was reported inside it

Time	Report	Where	Remark
May 7, 5:25 AM CDT	Thunderstorm Wind 56 E	Westover, 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 10.3 hours before the alert went out and 177 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: 3285 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 1057 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 9.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 7, 4:10 AM CDT, 1 hour 8 minutes earlier.

Area forecast discussion, May 7, 4:10 AM CDT, 1 hour 8 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
335 AM CDT MON MAY 7 2001

TSTMS HAVE REGENERATED EARLY THIS MORNING IN THE VCNTY OF SFC BNDRY
ACRS SRN PORTIONS OF THE FA. EXPECT THIS ACTIVITY TO CONT THIS MRNG
AS BNDRY PUSHES SLOWLY SWD AND S/W MOVES EWD OUT OF THE ROCKIES.
WILL ALSO INCLUDE SOME LO POPS FOR THE NW AS AREA OF SHWRS/TSTMS
MOVING SEWD FROM THE HIGH PLAINS OF ERN CO/WRN KS MAY MAKE IT INTO
NWRN ZONES BEFORE DSPTG. FNT IS EXPECTED TO PUSH S OF THE FA LATER
TODAY WITH SFC HI PRESSURE AREA SETTLING OVER THE FA TONIGHT. WKS
SFC RDG PERSISTS OVER THE AREA TUESDAY AND TUESDAY NIGHT WITH NWLY
UPR LVL FLO DVLPG. WILL KEEP FCST DRY THROUGH WEDNESDAY. NEXT S/W
APCHS THE FA THURSDAY WITH PAC FNT EXPECTED TO MOVE INTO THE AREA.
WILL CONT WITH CURRENT TREND AND INCLUDE POPS FOR THURSDAY AND
FRIDAY WITH THIS FTR.

FCSTID = 2
OKC   73  51  76  53 /  10   0   0   0
HBR   73  49  76  53 /  10  10  10  10
SPS   75  54  78  55 /  30  10   0   0
GAG   70  45  76  51 /  20  10  10  10
PNC   72  49  75  51 /  10   0   0   0
DUA   76  53  76  54 /  30  10   0   0

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

In the hours before

Local storm report, May 7, 4:21 AM CDT, 57 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
421 AM CDT MON MAY 07 2001

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

0420 AM    1 N BUFFALO SPRINGS       TX   .88 INCH HAIL
05/07/01   CLAY                           SHERIFF DEPT. REPORT

FM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 7:03 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	32 min
May 6, 7:08 PM CDT	Severe Thunderstorm Warning	OUN	Kay	37 min
May 6, 7:15 PM CDT	Severe Thunderstorm Warning	OUN	Pontotoc, Seminole	45 min
May 6, 7:26 PM CDT	Severe Thunderstorm Warning	OUN	Bryan, Marshall	49 min
May 6, 7:45 PM CDT	Severe Thunderstorm Warning	OUN	Kay	45 min
May 6, 7:48 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Custer	42 min
May 6, 7:54 PM CDT	Severe Thunderstorm Warning	OUN	Coal, Hughes	51 min
May 6, 8:27 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	33 min
May 6, 8:30 PM CDT	Severe Thunderstorm Warning	OUN	Kay	30 min
May 6, 8:32 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Canadian	38 min
May 6, 8:58 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher, Logan	32 min
May 6, 9:08 PM CDT	Severe Thunderstorm Warning	OUN	Canadian	52 min
May 6, 9:58 PM CDT	Severe Thunderstorm Warning	OUN	Canadian	47 min
May 6, 10:46 PM CDT	Severe Thunderstorm Warning	OUN	Oklahoma	29 min
May 7, 11:53 AM CDT	Flash Flood Warning	OUN	Grady	2 hr
May 7, 3:35 AM CDT	Severe Thunderstorm Warning	OUN	Archer	40 min
May 7, 3:51 AM CDT	Severe Thunderstorm Warning	OUN	Clay	39 min
May 7, 4:33 AM CDT	Severe Thunderstorm Warning	OUN	Baylor	42 min

Nearby

Severe Thunderstorm Warnings in Texas, 2001 Every severe thunderstorm warning in 2001

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.