Severe Thunderstorm Warning 69, NWS Flagstaff, AZ

Issued

Aug 15, 2001, 5:58 PM MST (00:58 UTC)

Expired

Aug 15, 2001, 6:45 PM MST

In force

47 min

Issued by

NWS Flagstaff, AZ

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Yavapai County, AZ

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

285 
WUUS55 KFGZ 160101
SVRFLG
AZC025-160145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
558 PM MST WED AUG 15 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL YAVAPAI COUNTY IN ARIZONA
  THIS INCLUDES THE CITIES OF...WAGONER...YAVA...SKULL VALLEY...
  WALKER...PONDEROSA PARK...KIRKLAND...PEEPLES VALLEY...WALNUT
  GROVE...WILHOIT

* UNTIL 645 PM MST

* AT 558 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 8 MILES NORTHWEST OF SKULL VALLEY
  TO WALKER...MOVING SOUTHWEST AT 10 MPH.

* SEVERE THUNDERSTORMS WILL AFFECT OR PASS CLOSE TO...
  OVER WILHOIT AT 605 PM MST
  OVER KIRKLAND AT 625 PM MST
  6 MILES EAST OF YAVA AT 635 PM MST
  OVER WALNUT GROVE...4 MILES NORTHEAST OF PEEPLES VALLEY...6 MILES
  NORTH OF WAGONER AT 645 PM MST

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...DAMAGING WINDS IN
EXCESS OF 58 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

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

LAT...LON 3473 11283 3454 11258 3458 11228 3422 11246
          3418 11267 3444 11300
$$
JJ

NWS Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 15, 3:54 PM MST, 2 hours 4 minutes earlier.

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
300 PM MST WED AUG 15 2001

.SYNOPSIS...THE AIR MASS OVER NORTHERN ARIZONA WILL SLOWLY DRY OVER
THE NEXT TWO DAYS. HOWEVER...ENOUGH LOW-LEVEL MOISTURE WILL REMAIN
FOR ISOLATED STORMS EACH DAY. OTHERWISE...TEMPERATURES WILL REMAIN
NEAR SEASONABLE LEVELS WITH LIGHT WINDS.

.DISCUSSION...ISOLATED CONVECTION HAS DEVELOPED OVER THE WESTERN AND
NORTHWESTERN ZONES WHILE THE EAST REMAINS FAIRLY QUIET. EXPECT MOST
OF THIS SHOWER ACTIVITY TO DIMINISH DURING THE EVENING. THE
EXCEPTION WILL BE THE NWRN ZONES WHERE SHOWERS MAY PERSIST LATER
INTO THE NIGHT IN ASSOCIATION WITH AN APPROACHING S/W TROUGH.

MID-LEVEL ANTICYCLONIC CIRCULATION WILL REMAIN OVER THE EPAC WITH A
BROAD TROUGH CENTERED OVER THE MIDWEST. THIS WILL CONTINUE TO
PRODUCE A GENERAL NORTHWEST FLOW IN THE MID-LEVELS WITH DRY EPAC AIR
MAKING ITS WAY ACROSS MUCH OF ARIZONA. SHOWER ACTIVITY SHOULD REMAIN
ISOLATED FOR THE NEXT FEW DAYS. MOST CONVECTIVE ACTIVITY SHOULD BE
CONFINED TO THE HIGHER ELEVATIONS. WITH THE REDUCTION IN PCPN AND
INCREASE IN SUNNY SKIES...EXPECT AFTERNOON TEMPERATURES TO CLIMB
BACK TO SEASONABLE LEVELS.

.EXTENDED...EPAC RIDGE CONTINUES TO PROVIDE A FAIRLY DRY ENVIRONMENT
WITH SLIGHT CHANCE OF SHOWERS EACH DAY...MAINLY OVER THE HIGHER
TERRAIN. MRF HINTS AT THE DEVELOPMENT OF AN EPAC TROUGH BY DAY 7.
WILL NEED TO MONITOR THIS DEVELOPMENT SINCE IT COULD PROVIDE A MOIST
FETCH OF AIR MOVING OVER ARIZONA LATE IN THE EXTENDED AND WOULD
REQUIRE HIGHER POPS.  DB

.FGZ...NONE.

Severe Thunderstorm Warnings in Arizona, 2001Every severe thunderstorm warning in 2001

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.