Flash Flood Warning 23, NWS Phoenix, AZ

AZC005-025-232330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX ARIZONA
200 PM MST SUN JUL 22 1990

SCATTERED THUNDERSTORMS HAVE DEVELOPED IN THE WESTERN CENTRAL MOUNTAINS
MAINLY IN THE AREAS FROM FLAGSTAFF TO GRAND CANYON AND INTO YAVAPAI
COUNTY.

AT 150 PM THE WEATHER RADARS INDICATED A HEAVY THUNDERSTORM JUST
EAST OF WIKIEUP AND ALSO ONE LOCATED BETWEEN PRESCOTT AND YARNELL.
THESE STORMS COULD BE PRODUCING SOME HEAVY RAINS AND GUSTY WINDS
AND COULD CAUSE SOME WASHES TO RUN AND HIGHWAY DIPS TO FLOOD.

THESE STORMS ARE MOVING TO THE SOUTHEAST AT ABOUT 15 MPH.

CONDITIONS ARE FAVORABLE FOR MORE THUNDERSTORMS DEVELOPMENT ESPECAILLY
IN THE CENTRAL MOUNTAINS...CENTRAL BASINS...AND THE SOUTHEAST THIS
AFTERNOON. SOME OF THESE THUNDERSTORMS MAY PRODUCE HEAVY RAINS.
 DKS 222102Z

AZC025-230045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX ARIZONA
343 PM MST SUN JUL 22 1990

SCATTERED THUNDERSTORMS...SOME WITH LOCALLY HEAVY RAIN...COVERED MUCH
OF NORTHERN ARIZONA LATE THIS AFTERNOON. AT 320 PM MST WEATHER RADAR
AT PHOENIX WAS INDICATING THE HEAVIEST THUNDERSTORMS WERE NEAR YARNELL
AND NORTH OF AGUILA IN SOUTHWEST YAVAPAI COUNTY AND ALSO
BETWEEN CAMP VERDE AND HAPPY JACK IN EXTREME EASTERN YAVAPAI COUNTY.

THESE THUNDERSTORMS WERE MOVING SOUTH TO SOUTHWEST AT ABOUT 5 TO 10
MPH. BECAUSE OF THE RELATIVELY SLOW MOVEMENT...LARGE AMOUNTS OF RAIN
COULD FALL IN SHORT TIME PERIODS OVER THE SAME AREA. THIS COULD HELP
TO CAUSE SOME FLOODING OF LOW SPOTS ON 4ROADWAYS...AS WELL AS CAUSE
WASHES TO BEGIN RUNNING. MOTORISTS SHOULD THEREFORE DRIVE WITH
CAUTION AND SHOULD AVOID DRIVING THROUGH FLOODED HIGHWAY DIPS.

AZC015-230100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX ARIZONA
405 PM MST SUN JUL 22 1990

SHOWERS AND THUNDERSTORMS...SOME WITH HEAVY RAIN...HAVE BEEN
DEVELOPING TOWARDS THE WEST SOUTHWEST OVER NORTHERN ARIZONA THE PAST
HOUR. THUNDERSTORMS THAT WERE OVER YAVAPAI COUNTY WERE BEGINNING TO
SPREAD INTO EASTERN MOHAVE COUNTY.

ONE PARTICULAR THUNDERSTORM TO THE EAST OF KINGMAN PRODUCED 47 MPH
WIND GUSTS AT THE KINGMAN AIRPORT JUST AFTER 330 PM. THESE STRONG
WINDS WERE LIKELY KICKING UP QUITE A BIT OF BLOWING DUST WITH REDUCED
VISIBILITIES.

MOTORISTS IN MOHAVE COUNTY...PARTICULARLY THE EASTERN PORTION...
SHOULD BE ON THE LOOKOUT FOR POSSIBLE HEAVY SHOWERS WITH THE
THUNDERSTORMS UNTIL ABOUT 6 PM MST. STAY AWAY FROM ANY FLOODED
HIGHWAY LOW SPOTS AS A FEW INCHES OF WATER COULD BECOME MUCH DEEPER
IN A VERY SHORT TIME PERIOD.

THE SHOWERS AND THUNDERSTORMS WERE MOVING TOWARDS THE SOUTH TO
SOUTHWEST AT ABOUT 5 TEO 10 MPH.

AZZ001-004-007-008-230200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PHOENIX ARIZONA
502 PM MST SUN JUL 22 1990

AT 455 PM MST RADAR AT THE PHOENIX WEATHER SERVICE OFFICE INDICATED
THAT SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...WERE
PERSISTING OVER MUCH OF SOUTHERN AND CENTRAL YAVAPAI...EASTERN
MOHAVE AND EASTERN LAPAZ COUNTIES. THE HEAVIEST CELLS WERE OVER FAR
SOUTHWEST YAVAPAI COUNTY ALONG U.S. HIGHWAY 93...AS WELL AS
IN THE VICINITY OF PRESCOTT.

THE THUNDERSTORMS IN SOUTHWEST YAVAPAI AND EASTERN LA PAZ COUNTIES
COULD VERY EASILY CAUSE STRONG WINDS ALONG WITH BLOWING DUST IN THE
ALAMO LAKE AREA ALONG BILL WILLIAMS RIVER. BOATERS OUT ON ALAMO LAKE
SHOULD CONSIDER COMING ASHORE IF THREATENING WEATHER APPROACHES.

ALSO...HEAVY SHOWERS WERE ALONG THE RIM NEAR PAYSON IN NORTHWEST
GILA COUNTY. THE OBSERVER IN PAYSON REPORTED VERY HEAVY RAIN ALONG
WITH PEA SIZE HAIL AND SOME FLOODING.

MOTORISTS DRIVING ANYWHERE IN THE ABOVE AREAS SHOULD PROCEED WITH
CAUTION AND NOT ATTEMPT TO CROSS FLOODED ROADS OR HIGHWAY LOW SPOTS.
DRIVE AT SLOWER SPEEDS WHEN VERY HEAVY RAIN OR DENSE BLOWING DUST IS
ENCOUNTERED...OR BETTER YET...IF VISIBILITIES ARE REDUCED TO NvEAR ZERO
...PULL OVER OFF OF THE ROADWAY...TURN OFF YOUR LIGHTS AND WAIT OUT
THE STORM.

THE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTH AT ABOUT 10 MPH.

ESTLE