Severe Thunderstorm Warning 22, NWS Flagstaff, AZ

Issued

Jul 31, 2000, 6:50 PM MST (01:50 UTC)

Expired

Jul 31, 2000, 7:45 PM MST

In force

55 min

Issued by

NWS Flagstaff, AZ

Area

Whole counties

County Coconino County, AZ

The Flagstaff radar (KFSX), 150 km from the middle of the area, began a volume at 01:49 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.

000 
WUUS55 KFGZ 010150
SVRFLG
AZC005-010245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
650 PM MST MON JUL 31 2000

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME SOUTHEASTERN COCONINO COUNTY IN ARIZONA

* UNTIL 745 PM MST

* AT 648 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SEVERE THUNDERSTORM OVER EXTREME SOUTHEASTERN COCONINO COUNTY 8 
MILES NORTH OF FOREST LAKES...MOVING WEST AT 15 MPH.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY
INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

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 3445c 11087 3457 11085 3458 11106 3448 11106

NWS Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 31, 2:30 PM MST, 4 hours 20 minutes earlier.

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
230 PM MST MON JUL 31 2000

SYNOPSIS...HIGH PRESSURE OVER THE GREAT BASIN WILL CONTINUE TO BRING AN
EASTERLY FLOW TO NORTHERN ARIZONA. EXPECT A CHANCE OF AFTERNOON AND EVENING
SHOWERS AND THUNDERSTORMS OVER MOST OF THE REGION THROUGH THE END OF
THE WEEK. TEMPERATURES WILL BEGIN COOLING TODAY...AND WILL TREND
TOWARD SEASONAL NORMALS BY TUESDAY OR WEDNESDAY.

DISCUSSION...MODELS IN GOOD AGREEMENT SETTLING RIDGE OVER THE GREAT
BASIN AREA...WHERE IT WILL SIT THROUGH THE MIDDLE OF THIS WEEK WITH
A SLIGHT EASTWARD SHIFTING OF THE RIDGE AXIS BY WEDNESDAY. THIS SHOULD
KEEP US IN A GOOD NORTHEASTERLY FLOW THROUGH THEN...KEEPING MOISTURE
FAIRLY LIMITED. HOWEVER...THERE STILL WILL BE ENOUGH MOISTURE
PRESENT FOR SIGNIFICANT CONVECTION TO OCCUR...ESPECIALLY ALONG THE
MOGOLLON RIM AND SOUTHWARD. STILL NOT ENOUGH LOW LEVEL MOISTURE
OVERALL TO SUSTAIN HEAVY RAINFALL. HOWEVER SOME STORMS...ESPECIALLY
THOSE DROPPING SOUTHWESTWARD OFF THE RIM...COULD PRODUCE SOME STRONG
GUSTY WINDS WITH THE POTENTIAL FOR DRY MICROBURSTS. COLD AIR...MINUS
7C...AT THE 500MB LEVEL SHOULD ALSO HELP KEEP US UNSTABLE ENOUGH FOR
DECENT AFTERNOON AND EARLY EVENING CONVECTIVE ACTIVITY. NOT A VERY
GOOD POSSIBILITY OF A GULF SURGE REACHING THIS AREA IN THE NEAR
FUTURE. FOR NOW...LOOKS LIKE THE NORTHEASTERLY FLOW OVER THE CWA
WILL KEEP THIS MOISTURE TO OUR SOUTH.

IN THE EXTENDED...HIGH IS EXPECTED TO REMAIN OVER THE GREAT BASIN
AREA THROUGH THE WEEK AND INTO THE WEEKEND. NOT MUCH CHANGE IN AIR
MASS EXPECTED...WITH ANY MOISTURE INCREASE SLOW TO OCCUR. EXPECT
MORE OF THE SAME WITH ISOLATED TO SCATTERED POPS OVER MOST OF THE
CWA.

KREITNER

.FGZ...NONE.

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

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.