297
FNUS86 KMTR 182055
FWLMTR
ECCDA DISCUSSIONS
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
155 PM PDT THU JUN 18 2026
#####################################################################
## ##
## DISCUSSIONS FROM THE LATEST FWF BELOW ##
## ##
#####################################################################
..DISCUSSION FROM SFOFWFMTR
AN APPROACHING UPPER LEVEL TROUGH WILL RESULT IN BELOW NORMAL
TEMPERATURES AND A DEEP MARINE LAYER BETWEEN 2000 TO 2500 FEET
TODAY THROUGH SATURDAY. THERE IS A LOW BUT NON-ZERO CHANCE OF
THUNDERSTORMS ACROSS THE HIGHEST RIDGELINES OF NORTHERN SONOMA AND
NAPA COUNTIES TONIGHT INTO FRIDAY. UPPER LEVEL RIDGING RETURNS BY
EARLY NEXT WEEK WITH A WARMING TREND BEGINNING SATURDAY. HIGH
TEMPERATURES WARM INTO THE UPPER 80S TO LOW 90S ACROSS THE INTERIOR
WITH LOW 100S POSSIBLE ACROSS THE INTERIOR CENTRAL COAST NEXT WEEK.
..DISCUSSION FROM SFOFWFEKA
HOT AND DRY CONDITIONS HAVE CONTINUED QUICKLY EASE TODAY WITH MOST
INTERIOR VALLEYS STRUGGLING TO REACH 80 AND RH RATCHETING UPWARD
CLOSER TO 30 PERCENT. CONDITIONS WILL FURTHER EASE THROUGH FRIDAY
WITH INCREASING MARINE INFLUENCE CLOSE TO SHORE. WINDS WILL MOSTLY
REMAIN MODERATE AND TERRAIN DRIVEN. THUNDERSTORMS CHANCES INCREASE
EARLY FRIDAY MORNING WITH STORMS MOST LIKELY TO FORM OVER HIGH
TERRAIN IN NORTHERN HUMBOLDT AND TRINITY COUNTIES EARLY IN THE
MORNING. UNCERTAINTY REMAINS HIGH (20% CHANCE OF STORMS), BUT ANY
STORMS THAT DO FORM WILL BE MOSTLY DRY AND FAST MOVING.
#####################################################################
## ##
## COMPLETE A DISCUSSION FOR EACH ECCDA SEGMENT BELOW ##
## WHEN DONE CLICK TRANSMIT, PRODUCT SENT AS KMTRFWLMTR ##
## ##
#####################################################################
ECC010-190900-
ST HELENA ECC DISPATCH-
DISCUSSION FOR MARIN AND SONOMA AND NAPA COUNTIES
155 PM PDT THU JUN 18 2026
AN APPROACHING UPPER LEVEL TROUGH WILL RESULT IN BELOW NORMAL
TEMPERATURES AND A DEEP MARINE LAYER BETWEEN 2000 TO 2500 FEET
TODAY THROUGH SATURDAY. THERE IS A LOW BUT NON-ZERO CHANCE OF
THUNDERSTORMS ACROSS THE HIGHEST RIDGELINES OF NORTHERN SONOMA AND
NAPA COUNTIES TONIGHT INTO FRIDAY. UPPER LEVEL RIDGING RETURNS BY
EARLY NEXT WEEK WITH A WARMING TREND BEGINNING SATURDAY. HIGH
TEMPERATURES WARM INTO THE UPPER 80S TO LOW 90S ACROSS THE INTERIOR
WITH LOW 100S POSSIBLE ACROSS THE INTERIOR CENTRAL COAST NEXT WEEK.
ECC014-190900-
MORGAN HILL ECC DISPATCH-
DISCUSSION FOR ALAMEDA AND CONTRA COSTA AND SANTA CLARA COUNTIES
155 PM PDT THU JUN 18 2026
AN APPROACHING UPPER LEVEL TROUGH WILL RESULT IN BELOW NORMAL
TEMPERATURES AND A DEEP MARINE LAYER BETWEEN 2000 TO 2500 FEET
TODAY THROUGH SATURDAY. THERE IS A LOW BUT NON-ZERO CHANCE OF
THUNDERSTORMS ACROSS THE HIGHEST RIDGELINES OF NORTHERN SONOMA AND
NAPA COUNTIES TONIGHT INTO FRIDAY. UPPER LEVEL RIDGING RETURNS BY
EARLY NEXT WEEK WITH A WARMING TREND BEGINNING SATURDAY. HIGH
TEMPERATURES WARM INTO THE UPPER 80S TO LOW 90S ACROSS THE INTERIOR
WITH LOW 100S POSSIBLE ACROSS THE INTERIOR CENTRAL COAST NEXT WEEK.
ECC013-190900-
FELTON ECC DISPATCH-
DISCUSSION FOR SANTA CRUZ AND SAN MATEO COUNTIES
155 PM PDT THU JUN 18 2026
AN APPROACHING UPPER LEVEL TROUGH WILL RESULT IN BELOW NORMAL
TEMPERATURES AND A DEEP MARINE LAYER BETWEEN 2000 TO 2500 FEET
TODAY THROUGH SATURDAY. THERE IS A LOW BUT NON-ZERO CHANCE OF
THUNDERSTORMS ACROSS THE HIGHEST RIDGELINES OF NORTHERN SONOMA AND
NAPA COUNTIES TONIGHT INTO FRIDAY. UPPER LEVEL RIDGING RETURNS BY
EARLY NEXT WEEK WITH A WARMING TREND BEGINNING SATURDAY. HIGH
TEMPERATURES WARM INTO THE UPPER 80S TO LOW 90S ACROSS THE INTERIOR
WITH LOW 100S POSSIBLE ACROSS THE INTERIOR CENTRAL COAST NEXT WEEK.
ECC018-190900-
MONTEREY ECC DISPATCH-
DISCUSSION FOR MONTEREY AND SAN BENITO COUNTY
155 PM PDT THU JUN 18 2026
AN APPROACHING UPPER LEVEL TROUGH WILL RESULT IN BELOW NORMAL
TEMPERATURES AND A DEEP MARINE LAYER BETWEEN 2000 TO 2500 FEET
TODAY THROUGH SATURDAY. THERE IS A LOW BUT NON-ZERO CHANCE OF
THUNDERSTORMS ACROSS THE HIGHEST RIDGELINES OF NORTHERN SONOMA AND
NAPA COUNTIES TONIGHT INTO FRIDAY. UPPER LEVEL RIDGING RETURNS BY
EARLY NEXT WEEK WITH A WARMING TREND BEGINNING SATURDAY. HIGH
TEMPERATURES WARM INTO THE UPPER 80S TO LOW 90S ACROSS THE INTERIOR
WITH LOW 100S POSSIBLE ACROSS THE INTERIOR CENTRAL COAST NEXT WEEK.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page