519
FNUS72 KILM 191043
FWSILM
SPOT FORECAST FOR SANDY ISLAND RX-1...THE NATURE CONSERVANCY
NATIONAL WEATHER SERVICE WILMINGTON NC
643 AM EDT TUE MAY 19 2026
FORECAST IS BASED ON IGNITION TIME OF 0900 EDT ON MAY 19.
IF CONDITIONS BECOME UNREPRESENTATIVE...OR IF YOU HAVE QUESTIONS
OR CONCERNS ABOUT THIS FORECAST...CONTACT THE NATIONAL WEATHER
SERVICE IN WILMINGTON AT 910-762-1374.
DISCUSSION
LIGHT AND VARIABLE TO CALM WINDS THIS MORNING WILL INCREASE
BETWEEN 0900-1000. WINDS FROM THE SOUTH TO SOUTHWEST THROUGH
LATE MORNING BEFORE SHIFTING TO OUT OF THE SOUTHEAST FOLLOWING
THE PASSAGE OF THE SEA BREEZE. WINDS WILL INCREASE AFTER THE
SEA BREEZE PASSES. NO RAIN CHANCES TODAY OR TONIGHT. LIGHT TO
CALM WINDS OVERNIGHT WILL ONCE AGAIN LEAD TO DEVELOPMENT OF FOG.
FOG POTENTIAL FOR TONIGHT IS HIGH.
REST OF TODAY
SKY/WEATHER.........SUNNY (5-15 PERCENT).
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 83.
MIN HUMIDITY........58 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 7 TO 9 MPH AROUND
MIDDAY.
MAX MIXING HGT......2700 FT AGL.
TRANSPORT WINDS.....SOUTH 7 TO 13 MPH.
MAX VENT RATE.......POOR (29533 MPH-FT).
MAX LVORI...........3.
MAX ADI.............37.
TIME (EDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........16 11 5 4 2 0 0 0 0
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF THDR (%).0 0 0 0 0 0 0 0 0
TEMP............75 77 80 81 82 82 81 81 81
RH..............81 75 70 65 58 63 65 66 67
20 FT WIND DIR..N S S SE SE SE S S SE
20 FT WIND SPD..0 2 3 8 9 8 8 9 9
20 FT WIND GUST.1 3 6 12 12 12 12 13 13
MIX HGT (KFT)...1.9 2.4 2.7 2.7 2.6 2.6 2.4 2.3 2.0
TRANSP WIND DIR.S S S SE SE SE SE S S
TRANSP WIND SPD.7 7 7 8 9 10 10 13 13
STABILITY.......A A A B B B B B B
LVORI...........3 3 3 3 2 1 1 1 3
ADI.............17 22 24 27 30 33 32 37 32
VRATE MPH-FT/1K.13 17 19 22 24 26 25 30 25
VENTRATE CAT....PR PR PR PR PR PR PR PR PR
SFC PRES (IN)...024 024 026 026 026 024 024 024 018
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (15-25 PERCENT). PATCHY FOG EARLY
IN THE MORNING.
CHANCE OF THUNDER...0 PERCENT.
MIN TEMPERATURE.....AROUND 66.
MAX HUMIDITY........99 PERCENT.
WIND (20 FT)........SOUTH WINDS 6 TO 9 MPH EARLY IN THE EVENING
BECOMING LIGHT.
MIN MIXING HGT......400 FT AGL.
TRANSPORT WINDS.....SOUTH 6 TO 13 MPH.
MIN VENT RATE.......POOR (2457 MPH-FT).
MAX LVORI...........9.
MIN ADI.............3.
TIME (EDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........1 2 3 3 4 5 8 12 15 22 28 35
WEATHER COV..... PTY
WEATHER TYPE.... FOG
TSTM COV........
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............79 77 74 73 71 70 69 69 68 67 67 66
RH..............70 75 81 86 88 90 92 94 95 96 97 98
20 FT WIND DIR..S S S S S S S S S S SW SW
20 FT WIND SPD..9 8 7 6 3 3 3 3 3 3 2 2
20 FT WIND GUST.13 12 10 9 6 6 6 5 4 4 3
MIX HGT (KFT)...1.8 1.6 1.0 0.4 0.5 0.4 0.4 0.4 0.4 0.5 0.4 0.4
TRANSP WIND DIR.S S S S S S S S S S S SW
TRANSP WIND SPD.13 13 12 12 10 10 9 9 8 8 7 6
STABILITY.......E E E F F F F F F F F F
LVORI...........3 3 4 5 5 6 6 6 8 8 8 9
ADI.............8 8 8 5 5 5 4 4 4 4 3 3
VRATE MPH-FT/1K.23 21 12 5 5 5 4 4 4 4 3 2
VENTRATE CAT....PR PR PR PR PR PR PR PR PR PR PR PR
SFC PRES (IN)...018 018 019 019 019 019 019 019 014 014 014 016
WEDNESDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CHANCE OF THUNDER...0 PERCENT.
MAX TEMPERATURE.....AROUND 85.
MIN HUMIDITY........61 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 5 TO 8 MPH IN
THE AFTERNOON.
MAX MIXING HGT......3500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 5 TO 7 MPH SHIFTING TO THE SOUTH 8 TO
14 MPH IN THE AFTERNOON.
MAX VENT RATE.......MARGINAL (35537 MPH-FT).
MAX LVORI...........9.
MAX ADI.............44.
TIME (EDT) 6 AM 8 AM 10 AM NOON 2 PM 4 PM
SKY (%).........34 33 27 13 4 4
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE NONE NONE
TSTM COV........
CHC OF THDR (%).0 0 0 0 0 0
TEMP............66 70 77 82 84 84
RH..............99 93 76 66 62 61
20 FT WIND......NW 2 SW 1 N 0 SE 5 SE 7 S 8
20 FT WIND GUST. 3 7 10 11
MIX HGT (FT)....400 600 2500 3400 3500 2700
TRANSPORT WIND..SW 6 SW 6 SW 7 S 7 S 9 S 13
STABILITY.......A A A A B B
LVORI...........9 6 3 3 1 1
ADI.............6 6 22 30 39 42
VRATE MPH-FT/1K.2 3 17 23 32 34
VENTRATE CAT....POOR POOR POOR POOR POOR POOR
SFC PRES (IN)...30.16 30.18 30.18 30.16 30.10 30.10
FORECASTER...LEBO
REQUESTED BY...CHELSEA MACKENZIE
TYPE OF REQUEST...PRESCRIBED
.TAG 2613984.0/ILM
.DELDT 05/19/26
.FORMATTERVERSION 2.0.0
.EMAIL C.F.MACKENZIE@TNC.ORG
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page