189
FNUS71 KLWX 201306
FWSLWX
SPOT FORECAST FOR NORTH RIVER BLACK LINING...USFS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
906 AM EDT FRI MAR 20 2026
FORECAST IS BASED ON IGNITION TIME OF 1500 EDT ON MARCH 20.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
MILDER TODAY WITH A CLIPPER SYSTEM BRINGING SOME RAIN SHOWERS TO THE
AREA LATE IN THE DAY. SOUTHWESTERLY WINDS INCREASE TODAY WITH
MOUNTAIN GUSTS TO AROUND 25 TO 35 MPH.
CONTINUED ABOVE AVERAGE TEMPERATURES THIS WEEKEND WITH ANOTHER
CHANCE FOR RAIN LATE IN THE WEEKEND WITH A COLD FRONTAL PASSAGE.
COOLER WEATHER RETURNS BY EARLY NEXT WEEK AS CANADIAN HIGH PRESSURE
APPROACHES FROM THE WEST.
REST OF TODAY
SKY/WEATHER.........CLOUDY (85-95 PERCENT). SLIGHT CHANCE OF RAIN
SHOWERS EARLY IN THE AFTERNOON. CHANCE OF RAIN
SHOWERS LATE IN THE AFTERNOON.
CWR.................10 PERCENT INCREASING TO 30 PERCENT.
CHANCE OF THUNDER...3 PERCENT.
MAX TEMPERATURE.....AROUND 61.
MIN HUMIDITY........42 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 8 TO 16 MPH WITH GUSTS TO
AROUND 32 MPH.
MIXING HEIGHT.......4600 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 30 TO 32 MPH.
SMOKE DISPERSAL.....EXCELLENT (104900 KNOT-FT).
TIME (EDT) 3 PM 5 PM
SKY (%).........88 91
WEATHER COV..... CHANCE
WEATHER TYPE....NONE RNSHWR
TSTM COV........
CWR.............10 30
CHC OF THDR (%).0 0
TEMP............60 59
RH..............44 49
20 FT WIND......SW 16 SW 16
20 FT WIND GUST.32 32
MIX HGT (FT)....4500 4000
TRANSPORT WIND..SW 31 SW 30
VRATE KT-FT/1K..120 105
VENTRATE CAT....VYGD VYGD
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF RAIN
SHOWERS DURING THE EVENING, THEN SLIGHT CHANCE
OF SHOWERS OVERNIGHT.
CWR.................40 PERCENT DURING THE EVENING, THEN DECREASING
TO 20 PERCENT OVERNIGHT.
CHANCE OF THUNDER...15 PERCENT.
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........100 PERCENT.
WIND (20 FT)........WEST WINDS 8 TO 16 MPH WITH GUSTS TO AROUND 32
MPH SHIFTING TO THE NORTHWEST 6 TO 12 MPH WITH
GUSTS TO AROUND 22 MPH OVERNIGHT.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....WEST 13 TO 26 MPH SHIFTING TO THE NORTHWEST 15
MPH AFTER 3 AM.
SMOKE DISPERSAL.....GOOD (52700 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (3900 KNOT-FT) LATE IN THE
NIGHT.
TIME (EDT) 6 PM 8 PM 10 PM MIDNGT 2 AM 4 AM
SKY (%).........93 58 65 68 57 54
WEATHER COV.....CHANCE S CHC CHANCE CHANCE
WEATHER TYPE....RNSHWR RNSHWR RNSHWR RNSHWR NONE NONE
TSTM COV........
CWR.............40 20 40 40 10 0
CHC OF THDR (%).0 10 10 10 10 0
TEMP............56 52 51 50 49 48
RH..............55 74 80 83 93 96
20 FT WIND......SW 15 W 16 W 12 W 10 NW 9 NW 8
20 FT WIND GUST.30 31 26 24 22 20
MIX HGT (FT)....2800 600 400 300 400 300
TRANSPORT WIND..SW 22 SW 20 W 20 W 17 W 17 NW 16
VRATE KT-FT/1K..53 9 7 5 6 4
VENTRATE CAT....FAIR POOR POOR POOR POOR POOR
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 65.
MIN HUMIDITY........40 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 4 TO 8 MPH SHIFTING TO THE
SOUTHWEST AROUND 6 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......5100 FT AGL.
TRANSPORT WINDS.....NORTHWEST 8 TO 16 MPH DECREASING TO AROUND 6
MPH EARLY IN THE AFTERNOON, THEN SHIFTING TO
THE WEST 5 TO 10 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (3100 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (42800 KNOT-FT) IN THE
AFTERNOON.
TIME (EDT) 6 AM 9 AM NOON 3 PM
SKY (%).........59 59 34 27
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............46 47 59 65
RH..............96 93 55 40
20 FT WIND......NW 7G18 NW 6G15 NW 6G15 W 6G14
MIX HGT (FT)....300 600 2300 4900
TRANSPORT WIND..NW 16 N 12 N 6 W 7
VRATE KT-FT/1K..4 6 12 30
VENTRATE CAT....POOR POOR POOR POOR
FORECASTER...WITT
REQUESTED BY...AARON STROBEL
TYPE OF REQUEST...PRESCRIBED
.TAG 2606714.1/LWX
.DELDT 03/20/26
.FORMATTERVERSION 2.0.0
.EMAIL JAMES.COLLETT@USDA.GOV,AARON.P.STROBEL@USDA.GOV
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