345
FNUS71 KLWX 201420
FWSLWX
SPOT FORECAST FOR BIG LEVELS FIRE...USDA FOREST SERVICE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
920 AM EST FRI DEC 20 2024
FORECAST IS BASED ON FORECAST START TIME OF 0900 EST ON DECEMBER 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
AN AREA OF LOW PRESSURE AND COLD FRONT WILL IMPACT THE AREA TODAY
INTO EARLY SATURDAY, BRINGING PERIODS OF LIGHT RAIN AND SNOW. HIGH
PRESSURE RETURNS LATE SATURDAY THROUGH MONDAY, WITH DRY AND VERY
COLD CONDITIONS. PRECIPITATION CHANCES INCREASE AS ANOTHER FRONT
APPROACHES DURING THE MIDDLE OF NEXT WEEK.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY (75-85 PERCENT). SLIGHT CHANCE OF
SNOW IN THE AFTERNOON. SLIGHT CHANCE OF RAIN
LATE IN THE AFTERNOON.
CWR.................10 PERCENT INCREASING TO 20 PERCENT.
MAX TEMPERATURE.....AROUND 35.
MIN HUMIDITY........78 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS AROUND 5 MPH SHIFTING TO THE
WEST 5 TO 7 MPH IN THE AFTERNOON.
MIXING HEIGHT.......2000 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 6 MPH SHIFTING TO THE WEST 6 TO
8 MPH EARLY IN THE AFTERNOON, THEN SHIFTING TO
THE NORTHWEST 8 TO 9 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (3900 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (15600 KNOT-FT) IN THE
AFTERNOON.
EYE LEVEL WINDS.....SOUTHWEST WINDS AROUND 3 MPH SHIFTING TO THE
WEST UP TO 4 MPH IN THE AFTERNOON.
TIME (EST) 9 AM 11 AM 1 PM 3 PM 5 PM
SKY (%).........86 80 77 72 79
WEATHER COV..... S CHC S CHC S CHC
WEATHER TYPE....NONE NONE SNOW SNOW RNSN
TSTM COV........
CWR.............10 10 10 10 20
TEMP............30 31 33 34 33
RH..............89 93 85 78 85
20 FT WIND......SW 5 SW 5 W 6 W 6 NW 7
20 FT WIND GUST.7 8 10 12 12
EYE LEVEL WIND..SW 3 SW 3 W 4 W 4 NW 4
EYE LVL WND GST.4 5 6 7 7
MIX HGT (FT)....1000 1400 2000 1900 1300
TRANSPORT WIND..SE 5 S 6 W 7 W 9 NW 8
VRATE KT-FT/1K..4 7 12 16 9
VENTRATE CAT....POOR POOR POOR POOR POOR
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) THEN BECOMING
PARTLY CLOUDY (30-40 PERCENT). SLIGHT CHANCE OF
SNOW EARLY IN THE EVENING.
CWR.................20 PERCENT DECREASING TO 10 PERCENT IN THE LATE
EVENING AND OVERNIGHT.
MIN TEMPERATURE.....AROUND 25.
MAX HUMIDITY........89 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 8 TO 15 MPH. GUSTS UP TO 29 MPH
OVERNIGHT.
MIXING HEIGHT.......100 FT AGL.
TRANSPORT WINDS.....NORTHWEST 2 TO 9 MPH INCREASING TO 16 TO 21 MPH
AFTER 3 AM.
SMOKE DISPERSAL.....FAIR (23800 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (200 KNOT-FT) LATE IN THE
NIGHT.
EYE LEVEL WINDS.....NORTHWEST WINDS 5 TO 9 MPH. GUSTS UP TO 29 MPH
OVERNIGHT.
TIME (EST) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........79 61 39 32 32 29
WEATHER COV.....S CHC S CHC
WEATHER TYPE....SNOW SNOW NONE NONE NONE NONE
TSTM COV........
CWR.............20 20 10 10 10 10
TEMP............32 32 31 30 29 27
RH..............89 89 81 81 75 74
20 FT WIND......NW 8 NW 8 NW 9 NW 9 NW 13 NW 15
20 FT WIND GUST.14 15 17 18 24 29
EYE LEVEL WIND..NW 5 NW 5 NW 5 NW 5 NW 8 NW 9
EYE LVL WND GST.8 9 10 11 14 17
MIX HGT (FT)....900 300 200 100 600 1300
TRANSPORT WIND..NW 7 NW 5 NW 3 NW 2 NW 9 NW 21
VRATE KT-FT/1K..5 1 1 0 5 24
VENTRATE CAT....POOR POOR POOR POOR POOR POOR
SATURDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................10 PERCENT.
MAX TEMPERATURE.....AROUND 28.
MIN HUMIDITY........46 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 13 TO 16 MPH WITH GUSTS TO
AROUND 31 MPH.
MIXING HEIGHT.......5000 FT AGL.
TRANSPORT WINDS.....NORTHWEST 18 TO 22 MPH BECOMING 20 TO 21 MPH
LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (7400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (71900 KNOT-FT) IN THE
AFTERNOON INCREASING TO GOOD (58800 KNOT-FT)
EARLY IN THE MORNING INCREASING TO EXCELLENT
(125200 KNOT-FT) IN THE AFTERNOON IN THE LATE
MORNING AND AFTERNOON.
EYE LEVEL WINDS.....NORTHWEST WINDS 8 TO 10 MPH WITH GUSTS TO
AROUND 19 MPH.
TIME (EST) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........21 13 15 19 24 15
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CWR.............10 0 0 0 0 0
TEMP............25 25 26 27 27 25
RH..............74 62 57 50 46 50
20 FT WIND......NW 15 NW 16 NW 15 NW 14 NW 14 NW 13
20 FT WIND GUST.30 30 31 29 28 28
EYE LEVEL WIND..NW 9 NW 10 NW 9 NW 8 NW 8 NW 8
EYE LVL WND GST.18 18 19 17 17 17
MIX HGT (FT)....500 1500 4300 5000 4900 4200
TRANSPORT WIND..NW 20 NW 22 NW 31 NW 28 NW 23 NW 21
VRATE KT-FT/1K..8 29 115 120 97 75
VENTRATE CAT....POOR POOR VYGD VYGD GOOD GOOD
FORECASTER...WITT
REQUESTED BY...MATHIAS CUISON
TYPE OF REQUEST...WILDFIRE
.TAG 2428590.3/LWX
.DELDT 12/20/24
.FORMATTERVERSION 2.0.0
.EMAIL MARCUS.SEWELL@USDA.GOV,MATHIAS.CUISON@USDA.GOV
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