FLASH FLOOD WATCH: SAN BERNARDINO MOUNTAINS AND DESERTS, RIVERSIDE COUNTY MOUNTAINS, SAN DIEGO COUNTY

Thursday, July 12, 2012

FLASH FLOOD WATCH: SAN BERNARDINO MOUNTAINS AND DESERTS, RIVERSIDE COUNTY MOUNTAINS, SAN DIEGO COUNTY

NATIONAL WEATHER SERVICE SAN DIEGO CA INCREASING MOISTURE AND INSTABILITY WILL GENERATE THUNDERSTORMS OVER THE MOUNTAINS AND DESERTS DURING THE DAY TODAY.

DEEP LAYER MOISTURE WILL BE SUFFICIENT FOR LOCALLY HEAVY RAIN LEADING TO
THE POTENTIAL FOR EXCESSIVE RUNOFF IN NORMALLY DRY CREEKS AND STREAMS.

FLASH FLOOD WATCH THURSDAY MORNING THROUGH THURSDAY EVENING
FOR THE SAN BERNARDINO MOUNTAINS AND DESERTS, THE RIVERSIDE
COUNTY MOUNTAINS, THE SAN DIEGO COUNTY MOUNTAINS, THE COACHELLA
VALLEY AND THE SAN DIEGO COUNTY DESERTS.

FLASH FLOOD WATCH REMAINS IN EFFECT FROM 11 AM PDT THIS
MORNING THROUGH THIS EVENING.
SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS-
SAN DIEGO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS-
COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS-

THE FLASH FLOOD WATCH CONTINUES FOR

* A PORTION OF SOUTHWEST CALIFORNIA...INCLUDING THE FOLLOWING
AREAS...APPLE AND LUCERNE VALLEYS...COACHELLA VALLEY...
RIVERSIDE COUNTY MOUNTAINS...SAN BERNARDINO COUNTY MOUNTAINS...SAN
DIEGO COUNTY DESERTS AND SAN DIEGO COUNTY MOUNTAINS.

* FROM 11 AM PDT THIS MORNING THROUGH THIS EVENING.

* EXCESSIVE RUNOFF FROM HEAVY DOWNPOURS MAY CAUSE RAPID FILLING
AND OVERFLOWING OF NORMALLY DRY WASHES AND SMALL CREEKS.

* POTENTIAL IMPACTS INCLUDE FLASH FLOODING AND MINOR DEBRIS
FLOWS IN SMALL CREEKS AND STREAMS...ROADWAY INTERSECTIONS...
AND OTHER LOW-LYING OR POORLY DRAINED AREAS. EXCESSIVE RUNOFF
CAN PRODUCE FLASH FLOODING FAR DOWNSTREAM OF THE HEAVIEST
RAINFALL.

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.
SHORT TERM FORECAST: SAN BERNARDINO COUNTY MOUNTAINS-RIVERSIDE COUNTY MOUNTAINS - SAN DIEGO COUNTY MOUNTAINS - APPLE AND LUCERNE VALLEYS - COACHELLA VALLEY - SAN DIEGO COUNTY DESERTS
836 AM PDT THU JUL 12 2012
NOW SCATTERED LIGHT SHOWERS WITH ISOLATED THUNDERSTORMS MOVING IN FROM THE EAST THIS MORNING WILL IMPACT THE LOCAL DESERTS AND MOUNTAINS.

BRIEF MODERATE RAIN WITH MAINLY A FEW HUNDREDTHS OF AN INCH IN THE HEAVIER SHOWERS IS EXPECTED. THUNDERSTORMS WILL BE CAPABLE OF PRODUCING GUSTY AND ERRATIC WINDS AND DANGEROUS LIGHTNING. HOWEVER PERIODS OF LOCALLY HEAVY RAIN WILL DEVELOP AS THE DAY PROGRESSES.

Hazardous Weather Outlook

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN DIEGO CA
805 AM PDT THU JUL 12 2012

CAZ055-060-131115-
SAN BERNARDINO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS-
405 AM PDT THU JUL 12 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME
SOUTHWESTERN CALIFORNIA.

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 11 AM PDT THIS
MORNING THROUGH THIS EVENING...

.DAY ONE...TODAY AND TONIGHT

THE FLASH FLOOD POTENTIAL IS HIGH. SCATTERED THUNDERSTORMS WILL
DEVELOP ACROSS THE MOUNTAINS AND DESERTS THIS MORNING...AND LINGER
THROUGH TONIGHT. THESE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING
GUSTY WINDS...SMALL HAIL...AND PERIODS OF HEAVY RAIN...WHICH MAY
PRODUCE FLASH FLOODING. THEREFORE...A FLASH FLOOD WATCH IS IN
EFFECT FROM 11 AM THURSDAY MORNING THROUGH THIS EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THE FLASH FLOOD POTENTIAL IS HIGH FOR FRIDAY...AS THE THREAT OF
SCATTERED THUNDERSTORMS WILL CONTINUE. THESE THUNDERSTORMS WILL
BE CAPABLE OF PRODUCING GUSTY WINDS...HEAVY RAINS...SMALL
HAIL...AS WELL AS DANGEROUS LIGHTNING. A SLIGHT CHANCE OF
THUNDERSTORMS WILL CONTINUE INTO SATURDAY.

.SPOTTER INFORMATION STATEMENT...
SKYWARN WEATHER ACTIVATION IS NOT REQUESTED FOR THIS AREA...
HOWEVER WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT
WEATHER CONDITIONS.

California Fire News 2012

- Follow @CalFireNews

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Thursday, July 12, 2012