Alert archive / Texas / Severe Thunderstorm Watches in 1998

Severe Thunderstorm Watch 856

October 1, 199814 counties in Oklahoma; 25 counties in Texas

The Storm Prediction Center issued this severe thunderstorm watch at Oct 1, 1998, 3:15 PM CDT for 14 counties in Oklahoma; 25 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Oct 1, 1998, 3:15 PM CDT (20:15 UTC)
Expired
Oct 1, 1998, 9:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 39 counties

Beckham County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Cotton County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Kiowa County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Armstrong County, TX, Baylor County, TX, Briscoe County, TX, Childress County, TX, Clay County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Kent County, TX, King County, TX, Knox County, TX, Montague County, TX, Motley County, TX, Stonewall County, TX, Wichita County, TX, Wilbarger County, TX

Warnings issued inside it

7 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Oct 1, 3:18 PM CDTSevere Thunderstorm WarningLUBMotley47 min
Oct 1, 3:22 PM CDTSevere Thunderstorm WarningLUBBriscoe48 min
Oct 1, 3:40 PM CDTSevere Thunderstorm WarningAMADonley65 min
Oct 1, 7:14 PM CDTSevere Thunderstorm WarningOUNKiowa46 min
Oct 1, 7:21 PM CDTSevere Thunderstorm WarningOUNWashita39 min
Oct 1, 7:47 PM CDTSevere Thunderstorm WarningOUNCaddo, Washita43 min
Oct 1, 8:39 PM CDTSevere Thunderstorm WarningOUNCaddo51 min

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 8.3 hours before the alert went out and 171 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-pSkew-T log-p diagram, Amarillo Airport, TX at 12:00Z on 1998-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 255 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Amarillo Airport, TX at 12:00Z on 1998-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
255 J/kg
Mixed-layer CIN
-133 J/kg
Mixed-layer LCL
922 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
71 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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.

Nearby

Severe Thunderstorm Watches in Texas, 1998Severe Thunderstorm Watches in Oklahoma, 1998Every severe thunderstorm watch 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; the sounding from the Mesonet's radiosonde archive.