114
FNUS75 KREV 090440
FWSREV
SPOT FORECAST FOR ALPINE COUNTY FUELS MITIGATION PROGRAM...ALPINE COUNTY
NATIONAL WEATHER SERVICE RENO NV
940 PM PDT THU MAY 8 2025
FORECAST IS BASED ON IGNITION TIME OF 0800 PDT ON MAY 09.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL
WEATHER SERVICE IN RENO.
DISCUSSION
* WARM TEMPERATURES PERSIST ALONG WITH LOW RELATIVE HUMIDITY THROUGH
SATURDAY.
* TERRAIN DRIVEN WINDS CONTINUE OVERNIGHT BECOMING FROM THE SOUTHWEST
UP TO 10 MPH DURING THE AFTERNOON. THIS COMBO WILL LEAD TO VERY
GOOD TO EXCELLENT VENT RATES.
* A STORM SYSTEM MAY BRING GUSTY WINDS, COOLER TEMPERATURES, AS
WELL AS RAIN AND MOUNTAIN SNOW SHOWERS VERY EARLY NEXT WEEK.
FRIDAY
SKY/WEATHER.........SUNNY.
TEMPERATURE.........55-60 AT IGNITION...MAX 73-78.
RH..................44-49% AT IGNITION...MIN 19-23%.
20-FOOT WINDS.......UPSLOPE WINDS 3-7 MPH BECOMING SOUTHWEST
5-10 MPH IN THE AFTERNOON.
CHC WETTING RAIN....0%.
CHANCE OF THUNDER...5%.
MIXING HEIGHT.......8300-9300 FT AGL.
VENTILATION.........FAIR TO EXCELLENT.
TIME (PDT) 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........5 5 4 14 14
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0
CHC OF THDR (%).0 0 10 10 10
TEMP............55 68 75 77 76
RH..............49 30 22 20 21
20 FT WIND......E 1 E 1 S 3 SW 8 SW 8
20 FT WIND GUST. 5 15 15
MX HT MSL (KFT).5.2 5.2 8.9 9.3 9.3
VRATE KT-FT/1K..36 36 107 121 121
VENTRATE CAT....FAIR FAIR EXNT EXNT EXNT
FRIDAY NIGHT
SKY/WEATHER.........CLEAR.
TEMPERATURE.........MIN 50-55.
RH..................MAX 45-50%.
20-FOOT WINDS.......SOUTHWEST WINDS 7-9 MPH EARLY IN THE EVENING
BECOMING LIGHT.
CHC WETTING RAIN....0%.
CHANCE OF THUNDER...0%.
MIXING HEIGHT.......1600-2600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 10-15 MPH.
VENTILATION.........VERY GOOD TO MARGINAL.
TIME (PDT) 5 PM 8 PM 11 PM 2 AM
SKY (%).........11 9 8 15
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............76 65 58 54
RH..............22 36 47 46
20 FT WIND......SW 9G15 SW 6G10 SW 5G10 SW 5G10
MX HT MSL (KFT).7.2 1.6 1.5 1.5
TRANSPORT WIND..SW 15 SW 10 SW 10 SW 10
VRATE KT-FT/1K..86 14 14 14
VENTRATE CAT....VYGD MRGL MRGL MRGL
FORECASTER...CRESPO
REQUESTED BY...JIM LAMB
TYPE OF REQUEST...PRESCRIBED
.TAG 2511119.2/REV
.DELDT 05/09/25
.FORMATTERVERSION 2.0.0
.EMAIL JLAMB@ALPINECOUNTYCA.GOV
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