Land Management Forecasts
Issued by NWS San Diego, CA

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FNUS86 KSGX 210949
FWLSGX

ECCDA DISCUSSIONS
NAATIONAL WEATHER SERVICE SAN DIEGO CA
249 AM PDT MON AUG 21 2017

ECC033-220400-
ORANGE ECC DISPATCH-
DISCUSSION FOR ORANGE ECC DISPATCH
249 AM PDT MON AUG 21 2017

A WEAK LOW PRESSURE SYSTEM OFF THE SOUTHERN CALIFORNIA COAST WILL
KEEP HIGH TEMPERATURES A FEW DEGREES BELOW AVERAGE TODAY...WARMING
TO NEAR FOR TUESDAY THROUGH FRIDAY... THEN 5 TO LOCALLY 10  DEGREES
ABOVE AVERAGE FOR NEXT WEEKEND. MID LEVEL MONSOONAL  MOISTURE TO THE
EAST AND NORTH WILL BRING A SLIGHT CHANCE OF  THUNDERSTORMS FOR THIS
AFTERNOON FOR THE SAN BERNARDINO COUNTY  MOUNTAINS AND DESERTS. THE
MARINE LAYER WILL KEEP HUMIDITIES HIGHER FOR COASTAL AND VALLEY
AREAS...WITH THE MARINE LAYER BECOMING SHALLOWER NEXT WEEKEND.

$$

ECC035-220400-
MONTE VISTA ECC DISPATCH-
DISCUSSION FOR MONTE VISTA ECC DISPATCH
249 AM PDT MON AUG 21 2017

A WEAK LOW PRESSURE SYSTEM OFF THE SOUTHERN CALIFORNIA COAST WILL
KEEP HIGH TEMPERATURES A FEW DEGREES BELOW AVERAGE TODAY...WARMING
TO NEAR FOR TUESDAY THROUGH FRIDAY... THEN 5 TO LOCALLY 10  DEGREES
ABOVE AVERAGE FOR NEXT WEEKEND. MID LEVEL MONSOONAL  MOISTURE TO THE
EAST AND NORTH WILL BRING A SLIGHT CHANCE OF  THUNDERSTORMS FOR THIS
AFTERNOON FOR THE SAN BERNARDINO COUNTY  MOUNTAINS AND DESERTS. THE
MARINE LAYER WILL KEEP HUMIDITIES HIGHER FOR COASTAL AND VALLEY
AREAS...WITH THE MARINE LAYER BECOMING SHALLOWER NEXT WEEKEND.

$$

ECC034-220400-
RIVERSIDE ECC DISPATCH-
DISCUSSION FOR RIVERSIDE ECC DISPATCH
249 AM PDT MON AUG 21 2017

...DISCUSSION FROM LAXFWFSGX...

A WEAK LOW PRESSURE SYSTEM OFF THE SOUTHERN CALIFORNIA COAST WILL
KEEP HIGH TEMPERATURES A FEW DEGREES BELOW AVERAGE TODAY...WARMING
TO NEAR FOR TUESDAY THROUGH FRIDAY... THEN 5 TO LOCALLY 10  DEGREES
ABOVE AVERAGE FOR NEXT WEEKEND. MID LEVEL MONSOONAL  MOISTURE TO THE
EAST AND NORTH WILL BRING A SLIGHT CHANCE OF  THUNDERSTORMS FOR THIS
AFTERNOON FOR THE SAN BERNARDINO COUNTY  MOUNTAINS AND DESERTS. THE
MARINE LAYER WILL KEEP HUMIDITIES HIGHER FOR COASTAL AND VALLEY
AREAS...WITH THE MARINE LAYER  BECOMING SHALLOWER NEXT WEEKEND.

...DISCUSSION FROM PHXFWFPSR...

AN UPPER LOW SITTING OFF THE SOUTHERN CALIFORNIA COAST WILL SPREAD
LIMITED AMOUNTS OF MONSOON MOISTURE INTO THE AREA RESULTING IN
ISOLATED MAINLY AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS OVER
FAR SOUTHEAST CALIFORNIA AND SOUTHERN ARIZONA. SOUTHWEST FLOW AROUND
THE LOW WILL USHER IN DRIER AIR FROM THE WEST TUESDAY, CONFINING
MOST OF THE STORMS TO HIGHER TERRAIN AREAS EAST OF PHOENIX. HIGH
TEMPERATURES TODAY AND TUESDAY WILL STAY NEAR SEASONAL NORMALS, AND
MINIMUM RH VALUES OVER THE DESERTS SHOULD MOSTLY HOVER IN THE TEENS.
WINDS BOTH DAYS WILL STAY LIGHT, FAVORING THE SOUTH TO SOUTHWEST
DURING THE AFTERNOON HOURS.

...THUNDERSTORMS IMPLY GUSTY WINDS...

NOTE...ADDITIONAL FIRE WEATHER FORECAST INFORMATION CAN BE FOUND IN
THE AREA FORECAST DISCUSSION. SEE PRODUCT PHXAFDPSR.

$$



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