Alert archive / Texas / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 499, NWS Norman, OK

August 3, 1998Wichita County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Aug 3, 1998, 5:47 PM CDT for Wichita County, Texas. It was in force for 43 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: Aug 3, 1998, 5:47 PM CDT (22:47 UTC)
Expired: Aug 3, 1998, 6:30 PM CDT
In force: 43 min
Issued by: NWS Norman, OK
Area: Whole counties

County Wichita County, TX

What was reported inside it

Time	Report	Where	Remark
Aug 3, 6:00 PM CDT	Thunderstorm Wind	Wichita Falls, TX
Aug 3, 6:00 PM CDT	Thunderstorm Wind	Wichita Falls, 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 Sill, OK (KFSI), launched 12:00Z, 10.8 hours before the alert went out and 79 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: 118 J/kg
Mixed-layer CIN: -214 J/kg
Mixed-layer LCL: 2311 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: -64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

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 Aug 3, 3:30 PM CDT, 2 hours 17 minutes earlier.

Area forecast discussion, Aug 3, 3:30 PM CDT, 2 hours 17 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
330 PM CDT MON AUG 3 1998

CONVECTION OVER SERN ZONES SHOULD DIMINISH WITH SUNSET.  SUBTROPICAL
MOISTURE EXTENDING ACROSS STATE CONTINUES TO SPIT OUT SHOWERS OVER
NRN ZONES.

MODELS FORECAST UPPER LOW TO MOVE SLOWLY SEWD WITH SEVERAL SPOKES TO
MOVE OVER FA THROUGH THE END OF THE WEEK. AS THESE SPOKES INTERACT
WITH AFOREMENTIONED AVAILABLE MOISTURE AND WITH VARIOUS SFC
BOUNDARIES REMAINING OVER THE AREA...EXPECT CONTINUED SCATTERED
PRECIP THROUGH FRIDAY.

THERMAL TROUGH AND PRECIP OUTFLOW SHOULD BRING CONSIDERABLE RELIEF
FROM THE HEAT...SO THE HEAT ADVISORY WILL NOT BE EXTENDED.

FCSTID = 10
OKC   75  90  73  87 /  30  30  40  40
HBR   73  92  71  87 /  20  30  40  20
SPS   79  94  76  92 /  20  30  40  30
GAG   64  88  63  85 /  30  30  40  20
PNC   74  90  72  88 /  30  40  40  40
DUA   77  99  75  95 /  20  30  40  30

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

4

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 3, 5:56 PM CDT	Flash Flood Warning	OUN	Wichita	2 hr

Nearby

Severe Thunderstorm Warnings in Texas, 1998 Every severe thunderstorm warning in 1998

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.