960
FNUS75 KREV 190031
FWSREV
SPOT FORECAST FOR ALPINE COUNTY FUELS MITIGATION PROGRAM...ALPINE COUNTY
NATIONAL WEATHER SERVICE RENO NV
531 PM PDT SUN MAY 18 2025
FORECAST IS BASED ON IGNITION TIME OF 0800 PDT ON MAY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL
WEATHER SERVICE IN RENO.
DISCUSSION
* AFTERNOON WIND GUSTS WILL RANGE BETWEEN N-NW WITH SPEEDS TO
15-20 MPH.
* WARMING AND DRYING TREND STARTS TOMORROW.
* OVERNIGHT RELATIVE HUMIDITIES WILL DECLINE BY MIDWEEK, WITH
DECENT RECOVERIES EACH AFTERNOON.
MONDAY
SKY/WEATHER.........SUNNY.
TEMPERATURE.........43-47 AT IGNITION...MAX 68-70.
RH..................45-50% AT IGNITION...MIN 19-22%.
20-FOOT WINDS.......WINDS NORTH AT 2 MPH AT IGNITION...OTHERWISE
UPSLOPE 3-7 MPH.
CHC WETTING RAIN....0%.
CHANCE OF THUNDER...0%.
MIXING HEIGHT.......7200-8200 FT AGL.
TRANSPORT WINDS.....NORTH AROUND 10 MPH SHIFTING TO THE NORTHWEST
LATE IN THE AFTERNOON.
VENTILATION.........FAIR TO EXCELLENT.
TIME (PDT) 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........4 4 3 2 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 54 62 67 68
RH..............48 30 22 19 19
20 FT WIND......N 2 N 2 N 6 N 6 N 6
20 FT WIND GUST.5 5 10 10 10
MX HT MSL (KFT).4.0 4.0 6.2 8.5 8.5
TRANSPORT WIND..N 10 N 10 NW 10 NW 15 NW 15
VRATE KT-FT/1K..40 40 62 103 103
VENTRATE CAT....POOR POOR GOOD VYGD VYGD
MONDAY NIGHT
SKY/WEATHER.........CLEAR.
TEMPERATURE.........MIN 41-43.
RH..................MAX 55-60%.
20-FOOT WINDS.......NORTHWEST WINDS 7-10 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 SHIFTING TO THE SOUTHWEST AFTER
3 AM.
VENTILATION.........EXCELLENT TO MARGINAL.
TIME (PDT) 5 PM 7 PM 9 PM 11 PM 1 AM 3 AM
SKY (%).........6 6 8 5 5 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............70 64 54 49 45 42
RH..............20 29 44 53 59 61
20 FT WIND......NW 10 NW 10 W 6 SW 6 SW 6 SW 5
20 FT WIND GUST.15 15 10 10 10 10
MX HT MSL (KFT).8.3 8.3 1.8 1.5 1.5 1.5
TRANSPORT WIND..W 15 W 15 W 15 SW 10 SW 10 SW 10
VRATE KT-FT/1K..108 108 20 12 12 10
VENTRATE CAT....VYGD VYGD POOR POOR POOR POOR
TUESDAY
SKY/WEATHER.........SUNNY.
TEMPERATURE.........MAX 73-75.
RH..................MIN 15-17%.
20-FOOT WINDS.......UPSLOPE 3-7 MPH BECOMING WEST 7-8 MPH LATE IN
THE AFTERNOON.
CHC WETTING RAIN....0%.
CHANCE OF THUNDER...0%.
MIXING HEIGHT.......9100-10100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 10 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING WEST AROUND 15
MPH IN THE AFTERNOON.
VENTILATION.........MARGINAL TO VERY GOOD INCREASING TO EXCELLENT
LATE IN THE AFTERNOON.
TIME (PDT) 5 AM 7 AM 9 AM 11 AM 1 PM 3 PM
SKY (%).........5 5 6 3 3 3
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............41 44 54 67 72 73
RH..............60 48 31 17 14 15
20 FT WIND......SW 2 SW 2 SW 2 W 3 W 3 W 8
20 FT WIND GUST.5 5 5 10 10 15
MX HT MSL (KFT).1.5 1.5 2.0 7.8 7.8 11
TRANSPORT WIND..SW 10 SW 10 SW 5 W 15 W 15 W 15
VRATE KT-FT/1K..10 10 10 85 85 147
VENTRATE CAT....POOR POOR POOR GOOD GOOD VYGD
FORECASTER...RICHARDS
REQUESTED BY...JIM LAMB
TYPE OF REQUEST...PRESCRIBED
.TAG 2513867.2/REV
.DELDT 05/19/25
.FORMATTERVERSION 2.0.0
.EMAIL JLAMB@ALPINECOUNTYCA.GOV
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