279
FNUS71 KLWX 201541
FWSLWX
SPOT FORECAST FOR BRAWNER RX...NPS
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1141 AM EDT FRI MAR 20 2026
FORECAST IS BASED ON IGNITION TIME OF 1100 EDT ON MARCH 23.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
A COLD FRONT WILL MOVE THROUGH SUNDAY NIGHT. WHILE SOME RAIN SHOWERS
ARE POSSIBLE, A SOAKING RAIN APPEARS UNLIKELY. THE TIMING OF THE FRONT
REMAINS A LITTLE UNCERTAIN, WITH SLOWER SOLUTIONS SUGGESTING THE CHANCE
FOR A FEW SHOWERS COULD LINGER INTO MONDAY MORNING. THE REMAINDER OF
MONDAY WILL FEATURE BREEZY NORTHWEST WINDS IN THE WAKE OF THE FRONT,
WITH GUSTS OF 25-35 MPH POSSIBLE. HUMIDITY VALUES WILL CRASH, POTENTIALLY
REACHING THE 30S BY AFTERNOON. WINDS WILL BE LIGHTER TUESDAY BUT RELATIVE
HUMIDITY WILL REMAIN LOW AS HIGH PRESSURE BUILDS OVERHEAD.
MONDAY
SKY/WEATHER.........MOSTLY SUNNY (25-35 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS IN THE MORNING.
CWR.................20 PERCENT DECREASING TO 10 PERCENT IN THE
AFTERNOON.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 62.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 14 TO 15 MPH.
MIXING HEIGHT.......5900 FT AGL.
TRANSPORT WINDS.....NORTHWEST 22 TO 26 MPH.
SMOKE DISPERSAL.....EXCELLENT (67300 KNOT-FT).
TIME (EDT) 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........54 44 43 25 20 15 10
WEATHER COV.....SCH SCH
WEATHER TYPE....RW RW
TSTM COV........
CWR.............20 20 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0
TEMP............57 57 58 57 57 57 56
RH..............55 50 45 42 40 38 38
20 FT WIND DIR..NW NW NW NW NW NW NW
20 FT WIND SPD..14 15 15 14 15 15 15
20 FT WIND GUST.24 24 24 24 24 25 25
MIX HGT (KFT)...3.5 3.8 4.0 4.2 5.0 5.8 5.9
TRANSP WIND DIR.N N NW NW NW NW NW
TRANSP WIND SPD.22 23 25 26 26 26 25
VRATE KT-FT/1K..67 79 88 97 118 133 130
VENTRATE CAT....GD GD GD GD VGD VGD VGD
MONDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT).
CWR.................10 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 32.
MAX HUMIDITY........62 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 14 MPH.
MIXING HEIGHT.......1300 FT AGL.
TRANSPORT WINDS.....NORTHWEST 14 TO 23 MPH SHIFTING TO THE NORTH 12
TO 14 MPH IN THE LATE EVENING AND OVERNIGHT.
SMOKE DISPERSAL.....EXCELLENT (93400 KNOT-FT) EARLY IN THE EVENING
DECREASING TO FAIR (14700 KNOT-FT) LATE IN THE
NIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........13 17 20 24 27 31 22 14 5 7 8 10
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............10 10 10 10 10 10 10 10 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............54 52 49 47 45 43 41 40 38 37 35 34
RH..............39 40 41 44 47 51 52 53 54 56 59 60
20 FT WIND DIR..NW NW NW NW N N N N N N N N
20 FT WIND SPD..14 12 10 10 10 10 9 9 8 7 7 6
20 FT WIND GUST.23 22 20 20 18 18 17 16 15 15 14 13
MIX HGT (KFT)...4.7 3.1 1.7 1.3 1.4 1.6 1.6 1.7 1.7 1.6 1.4 1.3
TRANSP WIND DIR.NW NW NW N N N N N N N N N
TRANSP WIND SPD.23 20 16 14 13 12 12 13 14 14 14 14
VRATE KT-FT/1K..93 52 24 16 15 16 17 19 20 19 17 15
VENTRATE CAT....GD FR PR PR PR PR PR PR PR PR PR PR
TUESDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 52.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........NORTH WINDS AROUND 5 MPH SHIFTING TO THE
SOUTH AROUND 5 MPH LATE IN THE AFTERNOON.
MIXING HEIGHT.......4100 FT AGL.
TRANSPORT WINDS.....NORTH 12 TO 15 MPH SHIFTING TO THE SOUTHEAST 7
TO 8 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....FAIR (14500 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (43200 KNOT-FT) IN THE
AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........9 9 8 8 8 8 14 19 25 29 32 36
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............33 32 33 35 38 42 45 48 49 51 52 52
RH..............62 62 59 52 45 39 35 32 31 30 31 32
20 FT WIND DIR..N N N N N N N N N NE SE S
20 FT WIND SPD..6 6 6 5 5 5 5 5 5 5 6 6
20 FT WIND GUST.12 12 10 10 9 9 9 9 9 10 10 12
MIX HGT (KFT)...1.2 1.2 1.4 1.9 2.6 3.2 3.5 3.7 3.8 4.0 4.1 3.8
TRANSP WIND DIR.N N N N N N N N N NE E SE
TRANSP WIND SPD.14 15 15 15 15 15 14 13 12 9 8 7
VRATE KT-FT/1K..15 15 18 25 35 42 43 41 38 33 28 23
VENTRATE CAT....PR PR PR PR PR FR FR FR PR PR PR PR
FORECASTER...SNYDER
REQUESTED BY...CULBRETH
TYPE OF REQUEST...PRESCRIBED
.TAG 2606794.0/LWX
.DELDT 03/20/26
.FORMATTERVERSION 2.0.0
.EMAIL TIMOTHY_CULBRETH@NPS.GOV
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