Alert archive / Arizona / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 6, NWS Flagstaff, AZ

July 24, 1990Yavapai County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 24, 1990, 3:03 AM MST for Yavapai County, Arizona. It was in force for 117 min.

The area

The counties it named.

The facts

Issued
Jul 24, 1990, 3:03 AM MST (10:03 UTC)
Expired
Jul 24, 1990, 5:00 AM MST
In force
117 min
Issued by
NWS Flagstaff, AZ
Area
Whole counties

County Yavapai County, AZ

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

Winslow (Autob), AZ (KINW), launched 00:00Z, 10.1 hours before the alert went out and 176 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, Winslow (Autob), AZ at 00:00Z on 1990-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 6 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, Winslow (Autob), AZ at 00:00Z on 1990-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 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
6 J/kg
Mixed-layer CIN
-497 J/kg
Mixed-layer LCL
2894 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
91 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.

The office that day

Everything else NWS Flagstaff, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 24, 1:25 AM MSTSevere Thunderstorm WarningFGZYavapai110 min
Jul 24, 1:25 AM MSTSevere Thunderstorm WarningFGZMaricopa110 min
Jul 24, 3:03 AM MSTSevere Thunderstorm WarningFGZMaricopa117 min

Nearby

Severe Thunderstorm Warnings in Arizona, 1990Every severe thunderstorm warning in 1990

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.