Land Management Forecasts
Issued by NWS Las Vegas, NV
Issued by NWS Las Vegas, NV
601 FNUS85 KVEF 201043 FWLVEF ECCDA DISCUSSIONS NATIONAL WEATHER SERVICE LAS VEGAS NV 343 AM PDT WED AUG 20 2025 ##################################################################### ## ## ## DISCUSSIONS FROM THE LATEST FWF BELOW ## ## ## ##################################################################### ...DISCUSSION FROM RNOFWFVEF... HOTTER THAN NORMAL TEMPERATURES WILL CONTINUE THROUGH THE END OF THE WEEK AS HIGH PRESSURE SETTLES OVER THE AREA. MONSOONAL MOISTURE WILL RETURN TO THE REGION, BRINGING INCREASED CHANCES FOR AFTERNOON SHOWERS AND THUNDERSTORMS DURING THE SECOND HALF OF THE WEEK. THESE STORMS WILL FAVOR AREAS OF HIGHER TERRAIN FOR DEVELOPMENT WITH ERRATIC OUTFLOW WINDS, LIGHTNING, AND LOCALIZED HEAVY RAIN POSSIBLE WITH ANY CONVECTION THAT DEVELOPS. OUTSIDE OF ANY POTENTIAL OUTFLOW WINDS, NO SIGNIFICANT WINDS ARE EXPECTED. ...DISCUSSION FROM LAXFWFSGX... HIGH PRESSURE ACROSS THE SOUTHWEST STATES WILL CONTINUE THE WARMING TREND WITH THE HEAT PEAKING ON THURSDAY AND FRIDAY. THIS WILL BE FOLLOWED BY A GRADUAL COOLING TREND WITH TEMPERATURES RETURNING TO AROUND AVERAGE ON NEXT TUESDAY. MONSOONAL MOISTURE WILL BEGIN TO INCREASE ON THURSDAY WITH CHANCES FOR AFTERNOON AND EARLY EVENING SHOWERS AND THUNDERSTORMS FOR THE MOUNTAINS AND DESERTS BEGINNING ON FRIDAY AND CONTINUING INTO NEXT WEEK. CHANCES FOR WETTING RAINFALL ARE GREATEST FOR THE MOUNTAINS FOR FRIDAY THROUGH MONDAY AT AROUND 50 TO 70 PERCENT. THE MARINE LAYER WILL BE AROUND 1200 FEET DEEP INTO NEXT WEEK. AN ELEVATED FIRE WEATHER RISK REMAINS DUE TO THE HOT WEATHER EXPECTED AS WELL AS ANY CLOUD TO GROUND LIGHTNING ASSOCIATED WITH ANY THUNDERSTORMS THAT OCCUR. ...DISCUSSION FROM PHXFWFPSR... TEMPERATURES WARM WELL ABOVE NORMAL TODAY AND TOMORROW AS HIGHS APPROACH RECORD LEVELS AND LOWS APPROACH RECORD WARM LEVELS. RELATIVE HUMIDITY WILL BOTTOM OUT AROUND 15-25% WITH POOR OVERNIGHT RECOVERY ACROSS THE WESTERN DISTRICTS AND FAIR OVERNIGHT RECOVERY ACROSS THE EASTERN DISTRICTS. THUNDERSTORM ACTIVITY WILL LIKELY REMAIN CONFINED TO THE HIGHER TERRAIN OF E AND SE AZ TODAY, WITH LESS THAN A 20% ACROSS THE LOWER DESERTS OF SOUTH-CENTRAL AZ. THUNDERSTORM CHANCES INCREASE TO 20-30% ACROSS THE SOUTH-CENTRAL AZ LOWER DESERTS TOMORROW AND REMAIN AROUND 30-50% ACROSS THE HIGHER TERRAIN. LIGHTNING AND GUSTY, ERRATIC OUTFLOW WINDS WILL BE THE PRIMARY CONCERNS WITH ANY THUNDERSTORMS. CHANCES FOR SEEING OUTFLOW WIND GUSTS IN EXCESS OF 35 MPH ARE UPWARDS OF 50-70% TODAY FOR SOUTHERN GILA, EASTERN MARICOPA, AND NW PINAL COUNTIES. CHANCES FOR WIND GUSTS, OVER THE SAME AREAS AS MENTIONED PREVIOUSLY, IN EXCESS OF 35 MPH TOMORROW REMAIN AROUND 50-70%, WITH A 10% CHANCE FOR WIND GUSTS IN EXCESS OF 58 MPH. WINDS WILL OTHERWISE FAVOR DIURNAL UPSLOPE/DOWNVALLEY PATTERNS WITH OCCASIONAL AFTERNOON GUSTS IN THE 15-20 MPH RANGE. ##################################################################### ## ## ## AFTER REVIEWING THE FWF DISCUSSIONS (ABOVE) - COMPLETE ## ## THE DISCUSSION (BELOW) FOR THE ECCDA FORECAST ## ## WHEN DONE CLICK TRANSMIT, PRODUCT SENT AS KVEFFWLVEF ## ## ## ##################################################################### ECC027-210445- SAN BERNARDINO ECC DISPATCH- DISCUSSION FOR SAN BERNARDINO ECC DISPATCH 343 AM PDT WED AUG 20 2025 HOTTER THAN NORMAL TEMPERATURES WILL CONTINUE THROUGH THE END OF THE WEEK AS HIGH PRESSURE SETTLES OVER THE AREA. MONSOONAL MOISTURE WILL RETURN TO THE REGION, BRINGING INCREASED CHANCES FOR AFTERNOON SHOWERS AND THUNDERSTORMS DURING THE SECOND HALF OF THE WEEK. THESE STORMS WILL FAVOR AREAS OF HIGHER TERRAIN FOR DEVELOPMENT WITH ERRATIC OUTFLOW WINDS, LIGHTNING, AND LOCALIZED HEAVY RAIN POSSIBLE WITH ANY CONVECTION THAT DEVELOPS. OUTSIDE OF ANY POTENTIAL OUTFLOW WINDS, NO SIGNIFICANT WINDS ARE EXPECTED. $$