[PHX-Skywarn] NWS - WEATHER EVENT NOTIFICATION

[ldad administrator]

THIS MESSAGE WAS SENT FROM THE NATIONAL WEATHER SERVICE PHOENIX MAIL SERVER

WWUS75 KPSR 051206
NPWPSR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PHOENIX AZ
506 AM MST SUN JAN 5 2003

AZZ020-CAZ030>032-051800-
JOSHUA TREE NATIONAL PARK/JTNP/-LOWER COLORADO RIVER VALLEY AZ-
LOWER COLORADO RIVER VALLEY CA-RIVERSIDE COUNTY/EASTERN DESERTS-
INCLUDING THE CITIES OF...BLYTHE...DESERT CENTER...EHRENBERG...PARKER
506 AM MST (406 AM PST) SUN JAN 5 2003

...HIGH WIND WATCH FOR JOSHUA TREE NATIONAL PARK...EASTERN
RIVERSIDE COUNTY...AND THE LOWER COLORADO RIVER VALLEY FROM
MIDNIGHT TONIGHT UNTIL MIDNIGHT MONDAY NIGHT...

A HIGH WIND WATCH HAS BEEN ISSUED FOR JOSHUA TREE NATIONAL PARK...
EASTERN RIVERSIDE COUNTY...AND THE LOWER COLORADO RIVER VALLEY FOR
THE PERIOD FROM MIDNIGHT TONIGHT UNTIL MIDNIGHT MONDAY NIGHT. THE
WATCH INCLUDES THE COMMUNITIES OF BLYTHE AND PARKER.

STRONG GUSTY NORTH TO NORTHEAST WINDS FROM 25 TO 45 MPH...WITH
GUSTS TO OVER 50 MPH...WILL DEVELOP TONIGHT OVER THE JOSHUA TREE
NATIONAL PARK AREA AND PARTS OF EASTERN RIVERSIDE COUNTY. THESE WINDS
WILL ALSO FOCUS DOWN THE LOWER COLORADO RIVER VALLEY. THE STRONG
GUSTY WINDS WILL CONTINUE MONDAY AND INTO MONDAY NIGHT BEFORE
GRADUALLY DECREASING. CONSIDERABLE BLOWING DUST AND SAND IS ALSO
EXPECTED WITH THE STRONG WINDS.

THE STRONGEST WINDS AFTER MIDNIGHT TONIGHT WILL LIKELY AFFECT THE
HIGHER ELEVATIONS OF JOSHUA TREE NATIONAL PARK...SUCH AS LOST
HORSE...BUT LOWER ELEVATIONS SUCH AS THE VISITORS CENTER WILL LIKELY
SEE STRONG WINDS OVER 30 MPH OVERNIGHT.

WINDY CONDITIONS ARE EXPECTED OVER IMPERIAL COUNTY...THE YUMA AREA...
AND PORTIONS OF SOUTHWEST AND SOUTH-CENTRAL ARIZONA MONDAY THROUGH
TUESDAY...BUT WIND SPEEDS SHOULD REMAIN BELOW HIGH WIND WARNING
LEVELS...GENERALLY AT AND BELOW 40 MPH.

THE PRESSURE DIFFERENCES BETWEEN STRONG HIGH PRESSURE ALOFT OVER THE
PACIFIC NORTHWEST AND A VIGOROUS LOW PRESSURE SYSTEM DROPPING SOUTH
SOUTHWEST THROUGH ARIZONA WILL LEAD TO THE STRONG WINDS. A COLD
FRONT ASSOCIATED WITH THE PASSING LOW WILL ALSO HELP TO STRENGTHEN
AND FOCUS THE GUSTY NORTH TO NORTHEAST WINDS.

MOTORISTS AND BOATERS PLANNING TRAVEL IN SOUTHEAST CALIFORNIA AND
THE COLORADO RIVER VALLEY...OR THOSE SENSITIVE TO WINDY WEATHER...
SHOULD LISTEN TO THE LATEST FORECASTS AND UPDATES CONCERNING THIS
DEVELOPING WIND EVENT.

$$

BRECKENRIDGE



NATIONAL WEATHER SERVICE