522
FNUS75 KREV 201253
FWSREV
SPOT FORECAST FOR ALPINE COUNTY FUELS MITIGATION PROGRAM...ALPINE COUNTY
NATIONAL WEATHER SERVICE RENO NV
553 AM PDT TUE MAY 20 2025
FORECAST IS BASED ON IGNITION TIME OF 0700 PDT ON MAY 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL
WEATHER SERVICE IN RENO.
DISCUSSION
* WARMING AND DRYING TREND CONTINUES OVER THE NEXT FEW DAYS.
* TYPICAL AFTERNOON WESTERLY WINDS CONTINUE THROUGH WEDNESDAY.
* SLIGHTLY COOLER TEMPERATURES ON THURSDAY AND FRIDAY WITH BREEZY
WEST-SOUTHWESTERLY WINDS GUSTING UP TO 20-30 MPH IN THE
AFTERNOON.
TODAY
SKY/WEATHER.........SUNNY.
TEMPERATURE.........43 AT IGNITION...MAX 72-75.
RH..................47% AT IGNITION...MIN 14-17%.
20-FOOT WINDS.......UPSLOPE 3-7 MPH BECOMING WEST 5-10 MPH WITH GUSTS
UP TO 15 MPH LATE IN THE AFTERNOON.
CHC WETTING RAIN....0%.
CHANCE OF THUNDER...0%.
MIXING HEIGHT.......7900-8900 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING WEST 10-15 MPH IN THE LATE
MORNING AND AFTERNOON.
VENTILATION.........MARGINAL INCREASING TO EXCELLENT LATE IN THE
MORNING.
TIME (PDT) 7 AM 9 AM 11 AM 1 PM 3 PM
SKY (%).........4 4 3 3 2
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0
TEMP............43 58 66 71 73
RH..............47 26 17 14 15
20 FT WIND......SW 3 SW 2 W 6 W 6 W 9
20 FT WIND GUST.5 5 10 10 15
MX HT MSL (KFT).1.5 5.0 8.4 8.4 9.0
TRANSPORT WIND..SW 5 W 10 W 15 W 15 W 15
VRATE KT-FT/1K..9 45 109 109 117
VENTRATE CAT....POOR GOOD EXNT EXNT EXNT
TONIGHT
SKY/WEATHER.........CLEAR.
TEMPERATURE.........MIN 43-48.
RH..................MAX 43-47%.
20-FOOT WINDS.......WEST 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.....WEST 10-15 MPH IN THE EVENING BECOMING LIGHT.
VENTILATION.........VERY GOOD TO POOR.
TIME (PDT) 5 PM 7 PM 9 PM 11 PM 1 AM 3 AM
SKY (%).........8 8 18 19 19 4
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0
TEMP............72 68 57 51 49 45
RH..............16 23 36 40 40 43
20 FT WIND......W 9 W 9 SW 5 SW 3 SW 3 W 3
20 FT WIND GUST.15 15 10 5 5 5
MX HT MSL (KFT).6.9 6.9 1.6 1.5 1.5 1.5
TRANSPORT WIND..W 15 W 15 W 10 W 5 W 5 SW 5
VRATE KT-FT/1K..76 76 13 8 7 7
VENTRATE CAT....VYGD VYGD MRGL MRGL POOR POOR
WEDNESDAY
SKY/WEATHER.........SUNNY.
TEMPERATURE.........MAX 74-78.
RH..................MIN 12-15%.
20-FOOT WINDS.......UPSLOPE 3-7 MPH BECOMING WEST 5-10 MPH WITH GUSTS UP TO 15 MPH
LATE IN THE AFTERNOON.
CHC WETTING RAIN....0%.
CHANCE OF THUNDER...0%.
MIXING HEIGHT.......7800-8800 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS BECOMING WEST 10-15 MPH IN THE
AFTERNOON.
VENTILATION.........POOR TO EXCELLENT.
TIME (PDT) 5 AM 7 AM 9 AM 11 AM 1 PM 3 PM
SKY (%).........5 5 4 3 3 2
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0
TEMP............43 47 56 69 75 77
RH..............39 36 24 17 14 12
20 FT WIND......SW 3 SW 3 SE 1 NE 2 NE 2 W 8
20 FT WIND GUST.5 5 5 5 11
MX HT MSL (KFT).1.5 1.5 3.3 6.0 6.0 9.2
TRANSPORT WIND..S 5 S 5 SW 5 W 10 W 10 W 15
VRATE KT-FT/1K..7 7 17 54 54 102
VENTRATE CAT....POOR POOR MRGL GOOD GOOD EXNT
FORECASTER...CRESPO
REQUESTED BY...JEFF BREES
TYPE OF REQUEST...PRESCRIBED
.TAG 2513867.3/REV
.DELDT 05/20/25
.FORMATTERVERSION 2.0.0
.EMAIL JEFFBREES@YAHOO.COM,JLAMB@ALPINECOUNTYCA.GOV
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