Alert archive / Texas / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 63, NWS Amarillo, TX

July 14, 1987Donley County, Texas

NWS Amarillo, TX issued this severe thunderstorm warning at Jul 14, 1987, 7:09 PM CDT for Donley County, Texas. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Jul 14, 1987, 7:09 PM CDT (00:09 UTC)
Expired
Jul 14, 1987, 8:15 PM CDT
In force
66 min
Issued by
NWS Amarillo, TX
Area
Whole counties

County Donley County, TX

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 00:00Z, 0.2 hours before the alert went out and 86 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 00:00Z on 1987-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1594 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 00:00Z on 1987-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 184 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
1594 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
1607 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
184 m²/s²
0-3 km storm-relative helicity
308 m²/s²
Significant tornado parameter
1.3
Supercell composite
11.3

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.

The office that day

Everything else NWS Amarillo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 14, 7:22 PM CDTSevere Thunderstorm WarningAMAArmstrong68 min
Jul 14, 7:51 PM CDTSevere Thunderstorm WarningAMADeaf Smith54 min
Jul 14, 8:04 PM CDTSevere Thunderstorm WarningAMABriscoe56 min

Nearby

Severe Thunderstorm Warnings in Texas, 1987Every severe thunderstorm warning in 1987

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.