945
FNUS71 KLWX 210305
FWSLWX
SPOT FORECAST FOR NORTH RIVER BLACK LINING...USFS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1105 PM EDT FRI MAR 20 2026
FORECAST IS BASED ON IGNITION TIME OF 0500 EDT ON MARCH 21.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
ONGOING SHOWERS WITH EMBEDDED THUNDERSTORMS OVER THE NEXT COUPLE
OF HOURS. WHILE WIDESPREAD WETTING RAINS MAY NOT OCCUR, SOME
LOCATIONS COULD RECEIVE BETWEEN A QUARTER AND HALF INCH. HIGH
PRESSURE WILL QUICKLY RETURN WITH CONTINUED ABOVE AVERAGE
TEMPERATURES THIS WEEKEND. HUMIDITY MAY DROP INTO THE 30S IN SOME
LOCATIONS. GUSTY SOUTH WINDS RETURN SUNDAY. A STRONGER COLD FRONT
WILL BRING THE NEXT CHANCE OF SHOWERS SUNDAY NIGHT. HOWEVER,
RAINFALL AMOUNTS LOOK TO BE LIMITED AND SOME AREAS MAY REMAIN DRY.
COOLER WEATHER RETURNS BY EARLY NEXT WEEK AS CANADIAN HIGH
PRESSURE APPROACHES FROM THE WEST. MONDAY WILL FEATURE STRONG
NORTHWEST WINDS AND DROPPING HUMIDITY LEVELS. TUESDAY WILL LIKELY
HAVE LOW HUMIDITY BUT LIGHT WINDS.
REST OF TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........96 PERCENT.
WIND (20 FT)........NORTHWEST WINDS AROUND 8 MPH.
MIXING HEIGHT.......300 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 15 MPH.
SMOKE DISPERSAL.....POOR (3600 KNOT-FT).
TIME (EDT) 5 AM
SKY (%).........68
WEATHER COV.....
WEATHER TYPE....NONE
TSTM COV........
CWR.............0
CHC OF THDR (%).0
TEMP............48
RH..............93
20 FT WIND......NW 8
20 FT WIND GUST.17
MIX HGT (FT)....300
TRANSPORT WIND..NW 15
VRATE KT-FT/1K..4
VENTRATE CAT....POOR
SATURDAY
SKY/WEATHER.........MOSTLY SUNNY (45-55 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 8 MPH IN THE MORNING
BECOMING LIGHT, THEN BECOMING WEST 6 TO 7 MPH
LATE IN THE AFTERNOON.
MIXING HEIGHT.......4900 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 14 MPH SHIFTING TO THE SOUTHWEST 5
TO 13 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (1900 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (52300 KNOT-FT) IN THE
AFTERNOON.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........70 63 53 36 33 32
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............47 46 51 59 64 66
RH..............93 93 80 55 41 38
20 FT WIND......NW 8 NW 6 NW 5 NW 5 NW 3 W 6
20 FT WIND GUST.17 13 13 10 10 14
MIX HGT (FT)....200 200 800 2200 4100 4900
TRANSPORT WIND..NW 14 N 10 N 7 N 6 SW 7 SW 12
VRATE KT-FT/1K..3 2 5 11 25 49
VENTRATE CAT....POOR POOR POOR POOR POOR FAIR
SATURDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MIN TEMPERATURE.....AROUND 45.
MAX HUMIDITY........86 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 6 TO 7 MPH SHIFTING TO THE
SOUTHEAST AROUND 8 MPH EARLY IN THE EVENING,
THEN SHIFTING TO THE WEST AROUND 5 MPH LATE IN
THE EVENING BECOMING LIGHT LATE IN THE EVENING
BECOMING SOUTHWEST 6 TO 8 MPH.
MIXING HEIGHT.......100 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 8 TO 14 MPH.
SMOKE DISPERSAL.....GOOD (39200 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (1100 KNOT-FT) LATE IN THE
NIGHT.
TIME (EDT) 6 PM 9 PM MIDNGT 3 AM
SKY (%).........31 25 29 28
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
CHC OF THDR (%).0 0 0 0
TEMP............64 54 48 47
RH..............41 64 77 83
20 FT WIND......SW 7G13 W 5G10 S 6G12 SW 8G14
MIX HGT (FT)....3300 100 200 100
TRANSPORT WIND..SW 14 S 10 SW 9 SW 12
VRATE KT-FT/1K..39 1 1 1
VENTRATE CAT....POOR POOR POOR POOR
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...3 PERCENT.
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........39 PERCENT.
WIND (20 FT)........WEST WINDS 7 TO 13 MPH. GUSTS UP TO 26 MPH IN
THE LATE MORNING AND AFTERNOON.
MIXING HEIGHT.......5900 FT AGL.
TRANSPORT WINDS.....WEST 12 TO 20 MPH INCREASING TO 22 TO 28 MPH IN
THE AFTERNOON.
SMOKE DISPERSAL.....POOR (1000 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (98600 KNOT-FT) IN THE
AFTERNOON INCREASING TO EXCELLENT (124400
KNOT-FT) LATE IN THE AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........40 44 49 48 46 44 45 46 47 42 36 31
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............47 48 50 54 60 66 69 72 74 76 76 75
RH..............86 83 80 74 64 54 51 46 43 40 39 40
20 FT WIND DIR..SW W W W W W W W W W W W
20 FT WIND SPD..7 8 8 9 9 10 12 12 13 13 13 13
20 FT WIND GUST.15 15 17 20 22 24 25 26 26 26 26 26
MIX HGT (KFT)...0.1 0.1 0.2 0.4 0.8 1.4 2.4 3.5 4.5 5.4 5.9 5.7
TRANSP WIND DIR.W W W W W W W W W W W W
TRANSP WIND SPD.12 13 14 15 17 20 22 23 25 26 28 26
VRATE KT-FT/1K..1 1 2 5 12 24 45 70 99 124 143 132
VENTRATE CAT....PR PR PR PR PR PR FR GD GD VGD VGD VGD
FORECASTER...BELAK
REQUESTED BY...AARON STROBEL
TYPE OF REQUEST...PRESCRIBED
.TAG 2606714.2/LWX
.DELDT 03/21/26
.FORMATTERVERSION 2.0.0
.EMAIL JAMES.COLLETT@USDA.GOV,AARON.P.STROBEL@USDA.GOV
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