Severe Thunderstorm Warning 87, NWS Flagstaff, AZ

Issued

Sep 11, 1997, 5:11 PM MST (00:11 UTC)

Expired

Sep 11, 1997, 6:10 PM MST

In force

59 min

Issued by

NWS Flagstaff, AZ

Area

Whole counties

County Yavapai County, AZ

The Flagstaff radar (KFSX), 124 km from the middle of the area, began a volume at 00:13 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 
TTAA00 KFLG 120012 RRA
SVRFLG
AZC025-120110-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
511 PM MST THU SEP 11 1997

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF AZ HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 610 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN CENTRAL ARIZONA

   ...SOUTHWESTERN YAVAPAI COUNTY
 
AT 507 PM MST...A SEVERE THUNDERSTORM WAS INDICATED BY FLAGSTAFF
DOPPLER RADAR 9 MILES WEST SOUTHWEST OF BAGDAD MOVING EAST
NORTHEAST AT 15 MPH.

SOME LOCATIONS IN THE WARNING AREA INCLUDE... BAGDAD.
 

SEVERE THUNDERSTORMS PRODUCE HAIL 3/4 OF AN INCH OR GREATER IN
DIAMETER. WINDS IN EXCESS OF 60 MPH ARE ALSO LIKELY WITH THIS
STORM. HEAVY RAIN WILL LIKLEY CAUSE WASHES AND CREEKS TO RUN
HIGH. PEOPLE IN THE PATH OF THIS STORM SHOULD MOVE TO SHELTER NOW!

PASSETTI

NWS Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 11, 2:23 PM MST, 2 hours 48 minutes earlier.

NORTHERN ARIZONA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
200 PM MST THU SEP 11 1997

COORDINATED WITH PHX ON FFA FOR SRN PART OF CWA UNTIL 5PM WHERE
FLOODING PRBLMS OCCRD EARLIER AND WERE STILL FORMING.  ALSO TALKED TO
SLC ABOUT CONCERNS FOR SVR WATCH NRN AZ...DECIDED NOT CRITICAL FOR
OUR CWA.  JET ASSOC WITH NICE UPR DIV/LWR CONV CUPLET WILL BE IN ERN
AZ BY THIS EVENING AND WILL HAVE TO BUMP UP SOME POPS THERE TONITE AS
CONVECTION LIKELY TO LINGER THRU SOME OF EVENING.

LIMITED LOOK AT MODELS TODAY DUE TO BUSY MORNING AND DATA PROCESSING
PRBLMS..MOST THOROUGH LOOK AT ETA.  MDLS ALL FCST SIGNIFICANT DRYING
BEHIND S/WV TROF IN SWRLY FLOW AT MID AND UPPER LEVELS...BUT SFC-
BASED INSTBLTY PARAMETERS DONT DROP OFF TOO MUCH.  STRONGEST ACTIVITY
WILL SHIFT TO SOUTHEAST AZ...INCLUDING EASTERN RIM AND WHT MTNS
TONITE AND TMRW...BUT WITH LOW-LVL MSTR LINGERING CAN'T RULE OUT
WESTERN PART OF CWA FOR SCT CONVECTION FRI.  HOWEVER NOT MUCH CHC OF
A TRIGGER LIKE WE HAD TDY AHEAD OF THE S/WV SO LKLY NO SVR OF FF
PRBLMS.  ETA INDICATING MOST THOROUGH DRYING OVR NW AND N-CNTRL AZ SO
WILL DROP POPS TO ISOLD THERE BOTH FRI AND SAT.  SW FLOW SHOULD KEEP
BEST MSTR IN SRN PART OF CWA.

MRF SUGGESTING CHC THAT H5 RDG WILL BUILD AGAIN BY LATE SAT AND INTO
EXTENDED PD...SO MAY NOT GET OUT OF SUMMER CONVECTIVE SEASON FOR A
WHILE YET.

FLG 2323  INW 3323
KEIGHTON
FLG...FLASH FLOOD WATCH SE YAV CNTY AND NW GILA CNTY TIL 5 PM MST

Severe Thunderstorm Warnings in Arizona, 1997Every severe thunderstorm warning in 1997

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.