Alert archive / Arizona / Severe Thunderstorm Watches in 2001

Severe Thunderstorm Watch 509

July 4, 2001Mohave County, Yavapai County, Arizona; Clark County, Nevada

The Storm Prediction Center issued this severe thunderstorm watch at Jul 4, 2001, 3:30 PM MST for Mohave County, Yavapai County, Arizona; Clark County, Nevada. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Jul 4, 2001, 3:30 PM MST (22:30 UTC)
Expired
Jul 4, 2001, 10:00 PM MST
In force
7 hr
Issued by
the Storm Prediction Center

Counties Mohave County, AZ, Yavapai County, AZ, Clark County, NV

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jul 4, 3:34 PM MSTSevere Thunderstorm WarningFGZYavapai26 min
Jul 4, 4:06 PM MSTSevere Thunderstorm WarningFGZYavapai54 min
Jul 4, 4:20 PM MSTSevere Thunderstorm WarningVEFMohave60 min
Jul 4, 5:34 PM MSTSevere Thunderstorm WarningVEFMohave56 min
Jul 4, 9:18 PM MSTSevere Thunderstorm WarningFGZCoconino, Yavapai27 min

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 10.5 hours before the alert went out and 287 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, Flgstf/Belemont, AZ at 12:00Z on 2001-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 122 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 2001-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 square meters per square second.1939Sfc1 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
122 J/kg
Mixed-layer CIN
-219 J/kg
Mixed-layer LCL
1981 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
24 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.

Nearby

Severe Thunderstorm Watches in Arizona, 2001Severe Thunderstorm Watches in Nevada, 2001Every severe thunderstorm watch in 2001

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.