Severe Thunderstorm Warning 9, NWS Flagstaff, AZ

Issued

Jun 26, 2015, 2:51 PM MST (21:51 UTC)

Expired

Jun 26, 2015, 3:15 PM MST

In force

24 min

Issued by

NWS Flagstaff, AZ

Area

Storm-based polygon

Counties Gila County, AZ, Navajo County, AZ

The Flagstaff radar (KFSX), 86 km from the middle of the area, began a volume at 21:54 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

954 
WUUS55 KFGZ 262151
SVRFGZ
AZC007-017-262215-
/O.NEW.KFGZ.SV.W.0009.150626T2151Z-150626T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
251 PM MST FRI JUN 26 2015

THE NATIONAL WEATHER SERVICE IN FLAGSTAFF HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTH CENTRAL GILA COUNTY IN EAST CENTRAL ARIZONA...
  SOUTHERN NAVAJO COUNTY IN NORTHEASTERN ARIZONA...

* UNTIL 315 PM MST

* AT 251 PM MST...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED 12 MILES SOUTHEAST OF YOUNG...OR
  25 MILES SOUTH OF FOREST LAKES...AND MOVING SOUTH AT 15 MPH.

* THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
  SOUTH CENTRAL GILA AND SOUTHERN NAVAJO COUNTIES.

THIS INCLUDES STATE ROUTE 288 BETWEEN MILE MARKERS 277 AND 279...AND
NEAR MILE MARKER 281.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE WIND GUSTS GREATER THAN 57 MPH AND OR
HAIL ONE INCH DIAMETER OR GREATER. FOR YOUR PROTECTION...SEEK SAFE
SHELTER IS A STURDY BUILDING OR AUTO.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY. LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER...
IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.

&&

LAT...LON 3378 11099 3404 11090 3402 11069 3380 11067
      3375 11070
TIME...MOT...LOC 2151Z 005DEG 11KT 3396 11081 

$$

RR

NWS Flagstaff, AZ wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 26, 9:59 AM MST, 4 hours 52 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
959 AM MST FRI JUN 26 2015

.SYNOPSIS...WARMER THAN NORMAL DAYTIME TEMPERATURES WILL PERSIST
ACROSS THE NORTHLAND TODAY. CHANCES FOR SHOWERS AND THUNDERSTORMS
WILL GREATEST ACROSS EASTERN ARIZONA THROUGH SATURDAY...WITH
INCREASING CHANCES SLOWLY SPREADING NORTHWEST OVER ALL OF NORTHERN
ARIZONA BY EARLY NEXT WEEK.

&&

.DISCUSSION...TODAY LOOKS SIMILAR TO YESTERDAY. THIS MORNINGS
UPPER AIR SOUNDING FROM THE FLAGSTAFF AREA SHOWS A CAP AROUND 500
MB THAT SHOULD INHIBIT VERTICAL CLOUD DEVELOPMENT IN THE AREA. HI-
RES MODELS DO SHOW A FEW SHOWERS AND THUNDERSTORMS FORMING IN THE
WHITE MOUNTAINS REGION BEFORE QUICKLY MOVING SOUTH. TEMPERATURES
ARE A FEW DEGREES WARMER THIS MORNING THAN YESTERDAY AT THIS TIME.
WE ARE STILL EXPECTING ABOVE NORMAL TEMPERATURES TODAY, WITH
TEMPERATURES NEAR 110 DEGREES IN THE LOWER DESERTS OF YAVAPAI
COUNTY AND ALONG THE FLOOR OF THE GRAND CANYON.

&&

.PREV DISCUSSION /351 AM MST/... WARMER THAN NORMAL DAYTIME TEMPS
WILL PERSIST TODAY AS STRONG HIGH PRESSURE REMAINS IN PLACE. WHILE
FLOW ALOFT IS NOT ESPECIALLY FAVORABLE FOR STORM DEVELOPMENT TODAY
AND TOMORROW...ISOLATED TO WIDELY SCATTERED SHOWERS AND
THUNDERSTORMS WILL STILL LIKELY DEVELOP...MAINLY ACROSS THE
MOUNTAINS OF EASTERN ARIZONA.

THE MONSOONAL FLOW SHIFTS TO A MORE FAVORABLE ORIENTATION BY EARLY
NEXT WEEK...AND AN INCREASE IN STORM COVERAGE IS EXPECTED ACROSS
MUCH OF NORTHERN ARIZONA.

&&

.AVIATION...FOR THE 18Z PACKAGE...VFR CONDITIONS WILL PERSIST AT ALL
TAF SITES THROUGH 18Z SATURDAY. OTHERWISE...A FEW SHOWERS AND
THUNDERSTORMS WILL AFFECT AREAS FROM THE WHITE MOUNTAINS WESTWARD
TOWARD PAYSON AND GILA COUNTY. THE MAIN STORM THREAT WILL BE ERRATIC
OUTFLOW WINDS IN EXCESS OF 45 KTS.

AVIATION DISCUSSION NOT UPDATED FOR TAF AMENDMENTS.

&&

.FIRE WEATHER...ISOLATED THUNDERSTORM ACTIVITY IS EXPECTED THIS
AFTERNOON MAINLY FROM THE WHITE MOUNTAINS REGION WESTWARD TOWARD
GILA COUNTY WITH OTHERWISE VERY WARM TEMPERATURES AND AFTERNOON
HUMIDITY RANGING FROM 10-20 PERCENT. SATURDAY WILL BEGIN A GRADUAL
INCREASE IN THUNDERSTORM ACTIVITY. ERRATIC OUTFLOW WINDS REMAIN
POSSIBLE NEAR ANY STORMS.

SUNDAY THROUGH TUESDAY...THUNDERSTORM CHANCES WILL INITIALLY FAVOR
EASTERN ARIZONA BUT WILL GRADUALLY SPREAD WEST ACROSS THE ENTIRE
AREA EARLY NEXT WEEK. THE INCREASED MOISTURE WILL LEAD TO SLIGHTLY
ELEVATED HUMIDITY LEVELS AND LOWER TEMPERATURES.

&&

.FGZ WATCHES/WARNINGS/ADVISORIES...NONE.

&&

PUBLIC...RR/KD
AVIATION...AT
FIRE WEATHER...MCS

FOR NORTHERN ARIZONA WEATHER INFORMATION VISIT
WEATHER.GOV/FLAGSTAFF

Severe Thunderstorm Warnings in Arizona, 2015Every severe thunderstorm warning in 2015

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.