EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Wakefield VA
510 AM EDT Tue Aug 18 2026
MDZ025-182000-
Assateague Island RAWS - Worchester MD
38.08N 75.20W Elev. 12 ft
510 AM EDT Tue Aug 18 2026
Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN 81 73 85 76 84
TEMP 76 79 79 78 77 77 76 75 75 80 82 82 79 77 77 77 77 80 81 81 76
DEWPT 76 75 75 75 74 75 74 73 72 72 71 71 72 72 73 73 75 74 75 75 74
MIN/MAX RH 86 96 67 89 79
RH 100 89 88 91 89 94 94 94 89 76 70 70 79 84 87 88 92 83 81 80 94
WIND DIR NW N E E E S W NW N NW S S S S S SW SW S S S S
WIND DIR DEG 32 00 07 08 07 16 28 31 34 31 16 17 17 18 20 21 21 18 18 18 17
WIND SPD 5 4 5 5 3 3 4 4 4 3 4 8 5 6 6 5 3 5 9 9 5
CLOUDS B1 SC SC SC SC SC FW SC SC SC FW FW FW FW FW FW SC SC B2 B2 B2
CLOUDS(%) 63 41 40 46 27 26 25 31 34 35 24 13 13 7 10 20 35 35 71 71 86
VSBY 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 5 5 4
POP 12HR 30 5 0 5 60
QPF 12HR 0.04 0.01 0 0 0.20
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C S S S L L D
TSTMS C S S S C
MIX HGT 700 600 500 600 1200 1300 900 900 1100 1000
T WIND DIR W NE S N E S S W N NE
T WIND SPD 5 4 3 2 3 6 6 8 9 9
SMOKE DISP PR PR PR PR PR PR PR PR PR PR
ADI 7 5 2 3 7 14 5 13 14 9
MAX LVORI 6 6 9 9 6 4 6 6 5 5
STABILITY A B F E A B F F B C
CEILING 7200 3900 7700 8000 7200 30000 30000 13800 6000 10800
PRESSURE 29.85 29.84 29.87 29.88 29.92 29.90 29.92 29.90 29.94 29.92
Date Fri 08/21/26Sat 08/22/26Sun 08/23/26Mon 08/24/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX 73 81 73 81 73 82 71 80
TEMP 75 74 79 77 75 75 79 77 75 75 80 78 74 72 78 77
DEWPT 74 74 73 73 73 74 74 74 73 73 73 72 70 68 67 67
MAX/MIN RH 99 81 98 82 97 75 90 65
RH 96 99 82 87 94 97 85 89 94 96 80 81 87 87 69 71
WIND DIR W N E E SE SW S S SW SW S SW W NW W W
WIND SPD 5 6 8 5 5 8 9 8 6 8 9 6 8 9 8 5
AVG CLOUDS B2 B2 B1 B1 B2 B2 B2 B1 B2 B2 B1 B1 SC SC SC FW
POP 12HR 80 40 70 70 70 40 20 5
RAIN SHWRS D L C C L L L C L L C C S
TSTMS C C S C S S S S S S
$$
VAZ064-182000-
EXPERIMENTAL ONLY...THIS PRODUCT IS FOR PLANNING AND REVIEW PURPOSES ONLY AND
IS NOT TO BE SUBSTITUTED FOR AN OFFICIAL FIRE WEATHER SPOT
FORECAST.
BELOW IS A WEATHER ELEMENT KEY FOR THIS PRODUCT.
(NOTE...WINDS DO NOT REFLECT LOCAL TERRAIN EFFECTS.)
DAY 1 THROUGH 3...
MAX/MIN TEMP or MIN/MAX TEMP(F).....MAXIMUM/MINIMUM AIR TEMPERATURE
TEMP(F).............................AIR TEMPERATURE
DEWPT(F)............................DEW POINT TEMPERATURE
MIN/MAX RH or MAX/MIN RH(%).........MAXIMUM/MINIMUM HUMIDITY
RH(%)...............................RELATIVE HUMIDITY
WIND DIR(8 POINT COMPASS)...........20 FT. WIND DIRECTION
WIND DIR DEG(DEGREES)...............20 FT. WIND DIRECTION IN TENS OF DEGREES
RELATIVE TO DUE NORTH.
EXAMPLE: 09 = 90 DEGREES = EAST; 18 = 180 DEGREES = SOUTH;
27 = 270 DEGREES = WEST; 36 = 360 DEGREES = NORTH
WIND SPD(MPH).......................20 FT. WIND SPEED
WIND GUST(MPH)......................20 FT. WIND GUST
WIND CHILL..........................WIND CHILL TEMPERATURE
HEAT INDX...........................HEAT INDEX
CLOUDS(CAT).........................CLOUD COVER CATEGORY
EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED;
B1 = MOSTLY CLOUDY; B2 = CONSIDERABLE CLOUDS; OV = OVERCAST
CLOUDS(%)...........................CLOUD COVER AS A PERCENTAGE
VSBY................................VISIBILITY VALUE IN STATUTE MILES
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION
QPF 12HR(IN)........................LIQUID EQUIVALENT PRECIPITATION AMOUNT
WEATHER...
TYPE...
RAIN...........RAIN
RAIN SHWRS.....RAIN SHOWERS
TSTMS..........THUNDERSTORMS
DRIZZLE........DRIZZLE
SNOW...........SNOW
SNOWSHWRS......SNOW SHOWERS
SLEET..........SLEET
FLURRIES.......FLURRIES
FRZG RAIN......FREEZING RAIN
FRZG DRZL......FREEZING DRIZZLE
COVERAGE...
S..............SLIGHT CHANCE
C..............CHANCE
L..............LIKELY
O..............OCCASIONAL
D..............DEFINITE
AR.............AREAS
PA.............PATCHY
OBVIS...............................OBSTRUCTION TO VISIBILITY
TYPE...
F..............FOG
PF.............PATCHY FOG
F+.............DENSE FOG
H..............HAZE
BS.............BLOWING SNOW
K..............SMOKE
BD.............BLOWING DUST
AF.............VOLCANIC ASHFALL
MIX HGT(FT AGL).....................MIXING HEIGHT
T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION
T WIND SPD(MPH).....................TRANSPORT WIND SPEED
SMOKE DISPERSION....................SMOKE DISPERSION CATEGORY
VALUES: VP = VERY POOR; PR = POOR; FR = FAIR; GD = GOOD
ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX
CEILING (FT)........................CEILING
PRESSURE (INCHES MERCURY)...........STATION PRESSURE
MAX LVORI (INDEX)...................LOW VISIBILITY OCCURRENCE RISK INDEX
STABILITY (CAT).....................PASQUILL TURNER STABILITY
WATCH/WARNING/ADVISORY...
EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH
IN EFFECT FOR THE INDICATED HOUR
DAY 4 THROUGH 7...
MAX/MIN TEMP or MIN/MAX TEMP(F).....MAXIMUM/MINIMUM AIR TEMPERATURE
TEMP(F).............................AIR TEMPERATURE
DEWPT(F)............................DEW POINT TEMPERATURE
RH(%)...............................RELATIVE HUMIDITY
WIND DIR............................20 FT. WIND DIRECTION
WIND SPD(MPH).......................20 FT. WIND SPEED
AVG CLOUDS(CAT).....................AVERAGE CLOUD COVER CATEGORY
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION
WEATHER...
SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS
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