Alert archive / Arizona / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 13, NWS Flagstaff, AZ

July 23, 2000Yavapai County, Arizona

NWS Flagstaff, AZ issued this severe thunderstorm warning at Jul 23, 2000, 1:30 PM MST for Yavapai County, Arizona. It was in force for 30 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 23, 2000, 1:30 PM MST (20:30 UTC)
Expired: Jul 23, 2000, 2:00 PM MST
In force: 30 min
Issued by: NWS Flagstaff, AZ
Area: Whole counties

County Yavapai County, AZ

The radar

The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 20:32 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 8.5 hours before the alert went out and 98 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: 22 J/kg
Mixed-layer CIN: -280 J/kg
Mixed-layer LCL: 2267 m above ground
0-6 km bulk shear: 3 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: 30 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS55 KFGZ 232035
SVRFLG
AZC025-232100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
130 PM MST SUN JUL 23 2000

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS EXTENDED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL YAVAPAI COUNTY IN ARIZONA
  THIS INCLUDES THE SOUTHERN PORTION OF THE CITY OF PRESCOTT

* UNTIL 200 PM MST

* AT 130 PM MST...WEATHER SPOTTERS CONTINUED TO REPORT A             
  SEVERE THUNDERSTORM ABOUT 3 MILES SOUTH OF PRESCOTT. THE STORM WAS 
  NEARLY STATIONARY.

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER 
AWAY FROM CREEK BEDS AND OTHER FLOOD-PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL.

HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS WASHES AND UNDERPASSES.
AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE
WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...
THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN FLAGSTAFF.

LAT...LON 3453 11253 3446 11247 3451 11238 3459 11244

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 12:28 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	32 min
Jul 23, 1:00 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	30 min
Jul 23, 2:12 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	33 min
Jul 23, 3:19 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	26 min
Jul 23, 4:28 PM MST	Severe Thunderstorm Warning	FGZ	Yavapai	32 min

Nearby

Severe Thunderstorm Warnings in Arizona, 2000 Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.