Red Flag Warning 22, NWS San Diego, CA

000 
WWUS86 KSGX 211453
RFWSGX

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
753 AM PDT WED MAY 21 2008

...RED FLAG WARNING IN EFFECT FOR DESERT SLOPES OF MOUNTAINS AND
FOR DESERT AREAS THIS AFTERNOON FOR THE COMBINATION OF RELATIVE
HUMIDITY LESS THAN 15 PERCENT AND WIND GUSTS GREATER THAN 35 MPH
FOR AT LEAST 6 HOURS...

.WINDS GUSTING OVER 55 MPH AND RELATIVE HUMIDITY AT OR BELOW 15
PERCENT HAVE BEEN OCCURRING OVER THE DESERT SLOPES OF THE MOUNTAINS
SINCE ABOUT 0300 PDT THIS MORNING. OVER THE DESERT VALLEY FLOORS
WINDS ARE ALSO GUSTING OVER 35 MPH BUT HUMIDITY HAS NOT YET FALLEN
BELOW 15 PERCENT. THIS WILL OCCUR BY LATE MORNING. THESE CRITICAL
FIRE WEATHER CONDITIONS WILL CONTINUE UNTIL 1800 PDT THIS EVENING.
FIRE GROWTH WILL BE RAPID IN THESE AREAS DUE TO THE VERY DRY AND
NEAR CONTINUOUS FUELS. 

CAZ255-256-258-220100-
/O.EXB.KSGX.FW.W.0022.080521T1453Z-080522T0100Z/
SAN BERNARDINO COUNTY MOUNTAINS-
INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF
THE SAN BERNARDINO NATIONAL FOREST-RIVERSIDE COUNTY MOUNTAINS-
INCLUDING THE SAN JACINTO RANGER DISTRICT OF THE SAN BERNARDINO
NATIONAL FOREST-SAN DIEGO COUNTY MOUNTAINS-
INCLUDING THE PALOMAR AND DESCANSO RANGER DISTRICTS OF THE
CLEVELAND NATIONAL FOREST-
753 AM PDT WED MAY 21 2008

...RED FLAG WARNING IN EFFECT UNTIL 6 PM PDT THIS AFTERNOON FOR 
THE DESERT SLOPES OF THE MOUNTAINS AND THOSE PORTIONS OF THE 
THE SAN BERNARDINO NATIONAL FOREST AND CLEVELAND NATIONAL
FOREST NOT LOCATED IN THE FRONT COUNTRY REGION DUE TO RELATIVE
HUMIDITY BELOW 15 PERCENT AND WINDS GUSTING OVER 35 MPH...

THE NATIONAL WEATHER SERVICE IN SAN DIEGO HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT UNTIL 6 PM PDT THIS AFTERNOON. 

RELATIVE HUMIDITY HAS FALLEN BELOW 15 PERCENT AND WIND GUSTS
ARE EXCEEDING 35 MPH. WIND GUSTS THIS MORNING AT BURNS CANYON
RAWS AND THE MOUNT SAN JACINTO TRAM HAVE RANGED BETWEEN 55 AND 66
MPH. SIMILAR CONDITIONS ARE LIKELY THROUGHOUT THE DAY AND WILL
SPREAD SOUTH TO ALSO AFFECT PORTIONS OF THE CLEVELAND NATIONAL
FOREST AND AREAS OF SAN DIEGO COUNTY LOCATED EAST OF HIGHWAY 79.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

$$

CAZ260>262-220100-
/O.CON.KSGX.FW.W.0022.080521T1900Z-080522T0100Z/
VICTOR VALLEY-APPLE VALLEY-LUCERNE VALLEY-YUCCA VALLEY-
MORONGO VALLEY-COACHELLA VALLEY-
INCLUDING THE PALM SPRINGS SOUTH COAST DESERT DISTRICT-
SAN DIEGO COUNTY DESERTS-
INCLUDING THE ANZA BORREGO DESERT STATE PARK-
753 AM PDT WED MAY 21 2008

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 6 PM PDT
THIS AFTERNOON...

A RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 6 PM PDT
THIS AFTERNOON. 

RELATIVE HUMIDITY IS EXPECTED TO FALL TO NEAR OR BELOW 15 PERCENT
BY NOON. WINDS ARE ALREADY GUSTING OVER 35 MPH. THE COMBINATION OF
BOTH OF THESE WILL CONTINUE THROUGH THIS AFTERNOON.

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

$$

BALFOUR

000 
WWUS86 KSGX 220041
RFWSGX

RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN DIEGO CA
541 PM PDT WED MAY 21 2008


CAZ260>262-220145-
/O.EXP.KSGX.FW.W.0022.000000T0000Z-080522T0100Z/
VICTOR VALLEY-APPLE VALLEY-LUCERNE VALLEY-YUCCA VALLEY-
MORONGO VALLEY-COACHELLA VALLEY-
INCLUDING THE PALM SPRINGS SOUTH COAST DESERT DISTRICT-
SAN DIEGO COUNTY DESERTS-
INCLUDING THE ANZA BORREGO DESERT STATE PARK-
541 PM PDT WED MAY 21 2008

...RED FLAG WARNING WILL EXPIRE AT 6 PM PDT THIS AFTERNOON...

THE RED FLAG WARNING WILL EXPIRE AT 6 PM PDT THIS AFTERNOON. 

$$

CAZ255-256-258-220145-
/O.EXP.KSGX.FW.W.0022.000000T0000Z-080522T0100Z/
SAN BERNARDINO COUNTY MOUNTAINS-
INCLUDING THE MOUNTAIN TOP AND FRONT COUNTRY RANGER DISTRICTS OF
THE SAN BERNARDINO NATIONAL FOREST-RIVERSIDE COUNTY MOUNTAINS-
INCLUDING THE SAN JACINTO RANGER DISTRICT OF THE SAN BERNARDINO
NATIONAL FOREST-SAN DIEGO COUNTY MOUNTAINS-
INCLUDING THE PALOMAR AND DESCANSO RANGER DISTRICTS OF THE
CLEVELAND NATIONAL FOREST-
541 PM PDT WED MAY 21 2008

...RED FLAG WARNING WILL EXPIRE AT 6 PM PDT THIS AFTERNOON...

THE RED FLAG WARNING WILL EXPIRE AT 6 PM PDT THIS AFTERNOON. 


$$

SCV

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
930 PM PDT TUE MAY 20 2008

.SYNOPSIS...
COOL AND CLOUDY WEATHER IS EXPECTED THE REST OF THIS WEEK AS THE
MARINE LAYER DEEPENS AND ONSHORE FLOW INCREASES. GUSTY WINDS WILL
CONTINUE OVER THE MOUNTAINS AND DESERTS THROUGH WEDNESDAY AFTERNOON.
A LOW PRESSURE SYSTEM WILL CAUSE A SLIGHT CHANCE OF SHOWERS OR
THUNDERSTORMS LATE THURSDAY THROUGH FRIDAY. CLOUDY...COOL AND
UNSETTLED WEATHER IS EXPECTED FOR MOST OF THE MEMORIAL DAY WEEKEND
AS THE LOW PRESSURE SYSTEM REMAINS OVER THE AREA.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

.SHORT TERM...TONIGHT THROUGH FRIDAY...
MOST AREAS EXPERIENCED MUCH COOLER WEATHER TODAY WITH THE RETURN OF
THE MARINE LAYER WHILE FOLKS IN THE COACHELLA VALLEY ENDURED ONE
LAST DAY OF VERY HOT WEATHER. A HIGH TEMPERATURE RECORD OF 111 WAS
SET AT THERMAL...BUT THIS SHOULD BE THE LAST OF THE RECORD HIGH
TEMPS FOR QUITE SOME TIME. THE UPPER HIGH HAS MOVED OUT OF THE AREA
AND BIG CHANGES ARE IN THE FORECAST. ONSHORE PRESSURE GRADIENTS ARE
ON THE RISE...NOW RUNNING 12 MB SAN-TRM AND 20 MB SAN-SLC...AND THE
00Z NKX SOUNDING INDICATES THE MARINE LAYER IS AROUND 2000 FT DEEP.
AN APPROACHING TROUGH OF LOW PRESSURE WILL FURTHER DEEPEN THE MARINE
LAYER OVERNIGHT TO 3500-4000 FT AND CAUSE STRONG GUSTY WINDS TO
DEVELOP OVER THE MOUNTAINS AND DESERTS...ESPECIALLY ON THE WIND
PRONE RIDGES AND DESERT SLOPES/CANYONS/VALLEYS IN SAN BERNARDINO
COUNTY WHERE GUSTS BETWEEN 58-70 MPH ARE POSSIBLE. WINDS WILL
PROBABLY BE ADVISORY STRENGTH TO THE SOUTH IN THE RIV-SAN MOUNTAINS
AND LOWER DESERTS. THE MARINE LAYER SHOULD BE DEEP ENOUGH BY
WEDNESDAY MORNING TO CAUSE AREAS OF DRIZZLE WEST OF THE MOUNTAINS
AND DENSE FOG ON THE COASTAL SLOPES. EXPECT LIMITED CLEARING DURING
THE DAY AS A STRONG JET CARVES OUT A LARGE TROUGH OVER THE WEST AND
ONSHORE FLOW MAINTAINS A DEEP MARINE LAYER. THE COOLING TREND SHOULD
CONTINUE WITH DAYTIME HIGHS DOWN ANOTHER 5-10 DEGREES ON WEDNESDAY.

DRY AND WINDY WEATHER CONTINUES IN THE UPPER DESERTS HOWEVER IT
APPEARS THAT DAYTIME TEMPS WILL BE LOW ENOUGH...AND DEW POINT TEMPS
HIGH ENOUGH...TO DROP THE RED FLAG WARNING. DONT ANTICIPATE NEEDING
ANY RED FLAG WARNINGS FOR TOMORROW AS CONDITIONS WILL BARELY BE
BORDERLINE RED FLAG CRITERIA AT BEST...AND ONLY DURING THE AFTERNOON.

FOR THURSDAY...ALL THE MODELS INDICATE THAT THE BROAD UPPER TROUGH
WILL CLOSE OFF OVER THE GREAT BASIN AND RETROGRADE TOWARDS SOCAL AS
A 100-120KT JET DEVELOPS OFF OUR COAST. BY FRIDAY...THE CENTER OF
THE UPPER LOW IS EXPECTED TO BE OVER SOCAL WITH 500 MB TEMPS BELOW
-20C AND A SFC-600 MB LIFTED INDEX OF -3C. THE CHANCE FOR SHOWERS
AND POSSIBLE THUNDERSTORMS IS BEGINNING TO LOOK PRETTY GOOD SO POPS
MAY NEED TO BE INCREASED AS WE GET CLOSER TO THIS EVENT. VERY
DIFFICULT AT THIS POINT TO SPECULATE ON POSSIBLE RAINFALL AMOUNTS AS
PRECIP WOULD BE CONVECTIVE IN NATURE AND THERE IS STILL SOME
UNCERTAINTY REGARDING THE EXACT POSITION OF THE UPPER LOW. IN
GENERAL...EXPECT COOL AND UNSETTLED WEATHER ON FRIDAY.

.LONG TERM...SATURDAY THROUGH MEMORIAL DAY...
PRESENCE OF THE UPPER LOW/TROUGH OVER THE REGION DURING THIS PERIOD.
SLIGHT DISAGREEMENTS AMONGST GLOBAL MODELS ON TROUGH AXIS POSITION
AND INTENSITY BUT NOT ENOUGH TO BE SWAYED FROM OVERALL COOL MOIST
PATTERN THAT WILL PREVAIL DURING THIS PERIOD. STILL LOOKS LIKE LOTS
OF CLOUDS FOR THE WEEKEND. AND MAYBE SOME MORE DRIZZLE OR LIGHT
SHOWERS...ESPECIALLY WEST OF MOUNTAINS. CONDITIONS SHOULD IMPROVE A
BIT BY MEMORIAL DAY WITH LESS CLOUDS AND SLIGHTLY WARMER WEATHER.

&&

.AVIATION...
210230Z...MARINE LAYER IS EXPECTED TO DEEPEN TO AROUND 3K FEET
TONIGHT WITH FURTHER DEEPENING EXPECTED ON WEDNESDAY. STRATUS WITH
BASES AROUND 1.5K FT MSL WILL SPREAD INLAND TO THE FOOTHILLS
OVERNIGHT. MULTIPLE LAYERS EXPECTED TO DEVELOP AND RESULT IN CIGS
RISING BY MORNING AND THROUGH THE DAY WED TO BETWEEN 2.5K AND 3K FT
MSL...WITH TOPS NEAR FL040. SOME DRIZZLE AND FOG MAY LOWER VIS AT
TIMES TO BETWEEN 3-5SM. CIGS MAY BREAK OCCASIONALLY W OF THE
MOUNTAINS ON WED...BUT GENERALLY OVC SKIES EXPECTED TO PERSIST.

ABOVE THE MARINE LAYER INCLUDING THE MOUNTAINS AND DESERTS...SKIES
WILL BE MOSTLY CLEAR WITH UNRESTRICTED VISIBILITY.

GUSTY WEST WINDS TO 40 KTS ARE EXPECTED ACROSS THE MOUNTAINS CRESTS
AND DESERTS TONIGHT AND WEDNESDAY...WITH ASSOCIATED MOUNTAIN WAVE
AND ROTOR ACTIVITY EXPECTED OVER THE ADJACENT DESERT AREAS...
ESPECIALLY NEAR KPSP.

&&

.MARINE...
210230Z...A 4 TO 5 FT SOUTH SWELL IS MOVING THROUGH THE COASTAL
WATERS TONIGHT. THIS SHOULD BRING ABOVE NORMAL SURF...MAINLY TO THE
ORANGE AND NORTHERN SAN DIEGO COUNTY BEACHES THROUGH WEDNESDAY.
LOCAL SETS TO 8 FEET ARE EXPECTED ON THE MORE EXPOSED S FACING
BEACHES.

ALSO...A LARGE SHORT PERIOD NORTHWEST SWELL IS EXPECTED TO MOVE INTO
THE OUTER COASTAL WATERS TODAY WITH SOME INCREASE IN NORTHWEST SWELL
IN THE INNER WATERS. THIS COULD BRING HIGHER THAN NORMAL SURF TO THE
SAN DIEGO COUNTY BEACHES ON WEDNESDAY. THE LARGEST SWELLS ARE
EXPECTED TO REMAIN WELL OFF THE COAST...NEAR SAN CLEMENTE ISLAND.
THE COMBINATION OF THE LARGE SHORT PERIOD NORTHWEST SWELL AND STRONG
NORTHWEST WINDS OVER THE OUTER WATERS WILL RESULT IN HAZARDOUS
CONDITIONS FOR SMALL CRAFT...SO A SMALL CRAFT ADVISORY HAS BEEN
POSTED.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...

HIGH WIND WARNING FOR THE SAN BERNARDINO COUNTY MOUNTAINS AND
DESERTS AND WIND ADVISORY FOR THE RIVERSIDE AND SAN DIEGO COUNTY
MOUNTAINS AND DESERTS THROUGH 600 PM WEDNESDAY. SEE LAXNPWSGX.

SMALL CRAFT ADVISORY FOR THE OUTER WATERS THROUGH WEDNESDAY NIGHT.
SEE LAXCWFSGX.

&&

PUBLIC...SCV
AVIATION/MARINE...JAD

NWS ON THE WEB AT WEATHER.GOV/SANDIEGO

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN DIEGO CA
400 PM PDT WED MAY 20 2008

CAZ042-043-048-050-055>058-060>062-221200-
ORANGE COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS-
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
SAN DIEGO COUNTY VALLEYS-SAN BERNARDINO COUNTY MOUNTAINS-
RIVERSIDE COUNTY MOUNTAINS-SANTA ANA MOUNTAINS AND FOOTHILLS-
SAN DIEGO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS-
COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS-
400 PM PDT WED MAY 20 2008

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

.DAY ONE...REST OF TODAY AND TONIGHT

GUSTY WINDS WILL CAUSE AREAS OF BLOWING DUST IN THE DESERTS THIS
EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS THURSDAY AFTERNOON...ESPECIALLY
OVER THE MOUNTAINS. THE THREAT FOR THUNDERSTORMS WILL CONTINUE
THROUGH SUNDAY MORNING.

SNOW SHOWERS ARE POSSIBLE ABOVE 7500 FT IN THE SAN GORGONIO
WILDERNESS AND ON MOUNT SAN JACINTO THURSDAY AFTERNOON THROUGH
SUNDAY MORNING.

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

SCV