Alert archive / Texas / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 201, NWS Norman, OK

May 6, 1995Knox County, Texas

NWS Norman, OK issued this severe thunderstorm warning at May 6, 1995, 5:55 AM CDT for Knox County, Texas. It was in force for 50 min.

The area

The counties it named.

The facts

Issued: May 6, 1995, 5:55 AM CDT (10:55 UTC)
Expired: May 6, 1995, 6:45 AM CDT
In force: 50 min
Issued by: NWS Norman, OK
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Knox County, TX

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 10.9 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: 1242 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 677 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 184 m²/s²
0-3 km storm-relative helicity: 315 m²/s²
Significant tornado parameter: 1.8
Supercell composite: 9.7

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 6, 4:07 AM CDT, 1 hour 48 minutes earlier.

Area forecast discussion, May 6, 4:07 AM CDT, 1 hour 48 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OKLAHOMA CITY OKLAHOMA
405 AM CDT SAT MAY 6 1995

LOOKS LIKE A CPL OF ROUGH DAYS COMING UP.  UPR SYS CONTS TO COIL ARND
ITSELF OUT W...AND GULF MSTR CONTS TO STREAM NWWD ACRS TX.  TROPICAL
CONNECTION IS ALSO IN PLACE.  BLV THAT WDSPD RN/TRW LKLY TDA AND TNGT
ACRS MOST OF THE FA.  MODELS PUT GRTST INSTAB AND LOW LVL MSTR CNVRGNC
IN SWRN ZNS THIS AFTN AND ERLY EVE...AND THIS APPEARS TO BE MOST LKLY
AREA FOR SVR WX THEN.  FARTHER E...THE COMBINATION OF ISENT LIFT AND
MODEST INSTAB SHOULD CAUSE FAIRLY PERSISTENT RN/TRW DURG THE DAY AND
INHIBIT SVR WX THRU TNGT.  NWRN ZNS SHOULD BE ON EDGE OF MAIN RN AREA
AND WL PUT LOWEST POPS THERE.  SVRL UPR IMPLSS SHOW UP ON WTR VPR IMGRY
WHIRLING ARND THE BIG UPR LOW.  THESE MAY WELL PROVIDE ANTHR EXCUSE FOR
LARGE SCALE TSTM DVLPMT TDA THRU SUN AS THEY MOVE INTO THE RGN.

WAS CONTEMPLATING A FF WCH FOR ABT THE SRN 1/3 OF FA FOR TNGT.  THE
UNCERTAINTY OF IF/WHERE HVY PCPN WL OCCUR TIPPED THE BALANCE AGAINST
ACTUALLY ISSUING IT.  DAY SHIFT CAN REEVALUATE THE SITN AND SEE IF IT IS
NEEDED THEN.  IT DOES APPEAR THAT THE SITN WL NOT CHG VRY MUCH OVRNT AS
GULF FLOW CONTS...AIDED AT NGT BY STG LLJ.  HVY RNFL WL CONT TO BE A
PSBLTY...AND IN WRN ZNS THERE WL CONT TO BE A CHC OF SVR WX.

THE CHC OF SVR WX APPEARS HIEST ON SUN AS MAIN VORT MAX WHIPS OUT OF THE
SWRN STATES.  HI INSTAB AND LOTS OF MSTR ARE FCST TO RMN ACRS MOST OF
THE FA ON SUN.  THE UPR SYS SHOULD HELP NUDGE THE DRYLN E INTO THE WRN
PT OF THE FA...PROVIDING ESSENTIALLY EVERYTHING A SVR STM COULD EVER
WANT.  WOULD HOPE THAT THERE WL BE SOME CLRG BHD THE UPR SYS...AT LEAST
OF PCPN IF NOT CLDS... LATE SUN NGT AND MON.  THIS SEEMS TO BE SUPPORTED
BY QUICK LOOK AT NEW MRF.

FWC/FAN TEMP GDNC IS NICELY CONSISTENT WITH PREV FCSTS SO WL NOT WANDER
FAR FM IT.  WL GENLY GO ABV POP GDNC FOR 1ST 2 PDS.

FCSTID=23=RS
HBR   72  61  73  52 / 80  70  60  30
OKC   70  62  71  55 / 80  70  60  30
SPS   75  63  75  52 / 70  70  50  30
GAG   67  58  70  48 / 40  50  50  30
PNC   68  59  69  55 / 70  70  70  40
DUA   72  62  74  57 / 80  80  70  40

.OKC...NONE.
.TX...NONE.

In the hours before

Local storm report, May 6, 1:33 AM CDT, 4 hours 22 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 4:33 AM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	37 min
May 6, 5:26 AM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	49 min
May 6, 6:11 AM CDT	Severe Thunderstorm Warning	OUN	Jackson	49 min
May 6, 6:28 AM CDT	Severe Thunderstorm Warning	OUN	Jackson, Kiowa, Tillman	47 min
May 6, 7:03 AM CDT	Severe Thunderstorm Warning	OUN	Tillman	42 min
May 6, 8:12 AM CDT	Severe Thunderstorm Warning	OUN	Cotton	63 min
May 6, 8:58 AM CDT	Severe Thunderstorm Warning	OUN	Garvin	62 min
May 6, 9:16 AM CDT	Flash Flood Warning	OUN	Cotton, Stephens	3 hr
May 6, 11:34 AM CDT	Severe Thunderstorm Warning	OUN	Love	41 min
May 6, 12:39 PM CDT	Severe Thunderstorm Warning	OUN	Grady	51 min
May 6, 12:52 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	53 min
May 6, 5:26 AM CDT	Severe Thunderstorm Warning	OUN	Foard	49 min
May 6, 6:11 AM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Wilbarger	49 min
May 6, 6:52 AM CDT	Severe Thunderstorm Warning	OUN	Knox	53 min
May 6, 7:43 AM CDT	Severe Thunderstorm Warning	OUN	Baylor	62 min
May 6, 7:43 AM CDT	Severe Thunderstorm Warning	OUN	Knox	12 min
May 6, 8:52 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Wichita	53 min
May 6, 9:42 AM CDT	Severe Thunderstorm Warning	OUN	Archer, Clay, Wichita	48 min
May 6, 10:15 AM CDT	Flash Flood Warning	OUN	Archer, Clay	3 hr
May 6, 10:30 AM CDT	Severe Thunderstorm Warning	OUN	Clay	45 min

Nearby

Severe Thunderstorm Warnings in Texas, 1995 Every severe thunderstorm warning in 1995

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.