026
FNUS71 KLWX 311318
FWSLWX
SPOT FORECAST FOR IRVINE RX...MARYLAND DNR FOREST SERVICE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
918 AM EDT TUE MAR 31 2026
FORECAST IS BASED ON IGNITION TIME OF 1000 EDT ON MARCH 31.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
PLEASE CONTACT OUR OFFICE IF YOU HAVE QUESTIONS
OR CONCERNS WITH THIS FORECAST.
DISCUSSION
HIGH PRESSURE WILL REMAIN ANCHORED OFFSHORE THROUGH TONIGHT WHILE A
FRONTAL SYSTEM STALLED OVER THE GREAT LAKES AND INTERIOR NORTHEAST
STARTS A SLOW SOUTHEASTWARD DRIFT. THIS WILL RESULT IN INCREASING
WARMTH AND DEW POINTS, ALTHOUGH THE DEPARTURE BETWEEN THE TWO WILL
STILL RESULT IN RELATIVE HUMIDITY AROUND 40 PERCENT THIS AFTERNOON.
SHOWERS ARE UNLIKELY TODAY, ALTHOUGH AN ISOLATED POP-UP CAN'T BE
RULED OUT THIS AFTERNOON. SOUTHWESTERLY WINDS WILL BECOME GUSTY AS
DAYTIME MIXING INCREASES.
GUSTY SOUTHWEST WINDS WILL CONTINUE WEDNESDAY WITH A GREATER CHANCE
OF SCATTERED AFTERNOON SHOWERS AND THUNDERSTORMS.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (35-45 PERCENT). ISOLATED SHOWERS
AND THUNDERSTORMS LATE IN THE AFTERNOON.
CWR.................10 PERCENT INCREASING TO 20 PERCENT LATE IN THE
AFTERNOON.
CHANCE OF THUNDER...20 PERCENT.
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........41 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 10 TO 16 MPH WITH GUSTS TO
AROUND 29 MPH. GUSTY AND ERRATIC WINDS POSSIBLE
NEAR THUNDERSTORMS LATE IN THE AFTERNOON.
MIXING HEIGHT.......5500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 20 TO 26 MPH.
SMOKE DISPERSAL.....FAIR (28400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (121000 KNOT-FT) IN THE
AFTERNOON.
TIME (EDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........30 31 30 39 38 37 45 53
WEATHER COV..... ISO ISO
WEATHER TYPE.... RW RW
TSTM COV........ ISO ISO
CWR.............10 10 10 10 10 10 20 20
CHC OF THDR (%).0 0 0 0 10 10 20 20
TEMP............69 72 74 77 79 80 81 81
RH..............59 55 53 48 47 45 42 41
20 FT WIND DIR..SW SW SW SW SW SW SW SW
20 FT WIND SPD..11 11 12 14 15 16 16 15
20 FT WIND GUST.20 20 22 24 25 26 26 25
MIX HGT (KFT)...1.7 2.5 3.6 4.4 5.4 5.5 5.3 4.7
TRANSP WIND DIR.SW SW SW SW SW SW SW SW
TRANSP WIND SPD.20 22 23 23 24 25 26 25
VRATE KT-FT/1K..28 47 71 89 113 120 121 104
VENTRATE CAT....PR FR GD GD VGD VGD VGD VGD
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT). ISOLATED SHOWERS
AND THUNDERSTORMS.
CWR.................20 PERCENT.
CHANCE OF THUNDER...17 PERCENT.
MIN TEMPERATURE.....AROUND 66.
MAX HUMIDITY........73 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 9 TO 14 MPH WITH GUSTS TO
AROUND 25 MPH. GUSTY AND ERRATIC WINDS POSSIBLE
NEAR THUNDERSTORMS EARLY IN THE EVENING.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 15 TO 22 MPH.
SMOKE DISPERSAL.....GOOD (52200 KNOT-FT) EARLY IN THE EVENING
DECREASING TO POOR (6800 KNOT-FT) LATE IN THE
NIGHT.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........55 58 43 28 38 51 44 42 42 48 68 56
WEATHER COV.....ISO ISO ISO ISO ISO ISO
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........ISO ISO ISO ISO ISO
CWR.............20 20 10 0 10 0 10 20 20 10 20 20
CHC OF THDR (%).20 20 0 0 10 0 10 10 20 10 20 20
TEMP............79 77 75 72 71 69 69 68 68 67 67 66
RH..............44 47 48 53 57 61 63 65 65 68 68 70
20 FT WIND DIR..SW S S S SW SW SW SW SW SW SW SW
20 FT WIND SPD..14 13 10 10 10 10 10 10 10 10 10 9
20 FT WIND GUST.25 23 18 18 18 18 18 18 18 18 18 16
MIX HGT (KFT)...2.7 0.8 0.6 0.6 0.7 0.7 0.9 0.8 0.7 0.5 0.5 0.5
TRANSP WIND DIR.SW SW SW SW SW SW SW SW SW SW SW SW
TRANSP WIND SPD.22 17 18 18 20 20 18 18 17 17 15 15
VRATE KT-FT/1K..52 12 9 9 12 12 15 12 10 8 7 7
VENTRATE CAT....FR PR PR PR PR PR PR PR PR PR PR PR
WEDNESDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS IN THE MORNING.
SHOWERS LIKELY AND CHANCE OF THUNDERSTORMS IN
THE AFTERNOON.
CWR.................20 PERCENT INCREASING TO 70 PERCENT.
CHANCE OF THUNDER...36 PERCENT.
MAX TEMPERATURE.....AROUND 81.
MIN HUMIDITY........46 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 7 TO 10 MPH. GUSTY AND ERRATIC
WINDS POSSIBLE NEAR THUNDERSTORMS LATE IN THE
AFTERNOON.
MIXING HEIGHT.......6600 FT AGL.
TRANSPORT WINDS.....WEST 13 TO 18 MPH.
SMOKE DISPERSAL.....POOR (6600 KNOT-FT) EARLY IN THE MORNING
INCREASING TO EXCELLENT (79200 KNOT-FT) IN THE
AFTERNOON.
TIME (EDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........53 50 59 44 41 38 51 64 79 79 79 79
WEATHER COV.....SCH SCH LKY LKY LKY LKY
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........SCH SCH SCH SCH SCH CHC
CWR.............20 20 10 10 10 10 10 10 70 70 70 70
CHC OF THDR (%).20 20 10 10 10 10 10 10 20 20 20 40
TEMP............66 66 66 68 71 74 76 78 80 80 81 79
RH..............73 70 73 70 66 62 58 54 51 49 46 49
20 FT WIND DIR..SW SW SW SW SW SW SW W W W SW SW
20 FT WIND SPD..9 8 8 8 10 10 10 10 10 10 8 7
20 FT WIND GUST.15 15 15 15 17 17 17 17 17 17 16 16
MIX HGT (KFT)...0.5 0.5 0.6 1.6 2.2 3.2 3.8 4.8 5.7 6.4 6.6 6.1
TRANSP WIND DIR.SW SW SW SW W W W W W W W W
TRANSP WIND SPD.15 14 14 16 17 18 18 17 15 14 14 13
VRATE KT-FT/1K..7 7 8 22 32 51 61 72 74 76 79 67
VENTRATE CAT....PR PR PR PR PR FR GD GD GD GD GD GD
FORECASTER...SNYDER
REQUESTED BY...SHANNON WOLFE
TYPE OF REQUEST...PRESCRIBED
.TAG 2608341.2/LWX
.DELDT 03/31/26
.FORMATTERVERSION 2.0.0
.EMAIL SHANNON.WOLFE@MARYLAND.GOV
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