EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Wakefield VA
510 PM EDT Tue Aug 18 2026
MDZ025-190800-
Assateague Island RAWS - Worchester MD
38.08N 75.20W Elev. 12 ft
510 PM EDT Tue Aug 18 2026
Date 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX 74 83 76 83 73
TEMP 77 77 76 75 76 80 82 82 80 78 77 76 77 80 82 82 79 76 75 74 74
DEWPT 74 74 74 73 72 72 72 72 72 72 73 74 75 75 75 75 74 74 73 73 73
MAX/MIN RH 94 71 97 78 99
RH 90 92 94 94 87 78 72 72 77 82 88 94 94 84 79 78 85 94 95 97 97
WIND DIR E E E NW N SE S S S S SW SW S S S S S SW W N N
WIND DIR DEG 08 11 07 33 00 13 17 18 18 20 20 21 20 19 18 17 17 23 27 35 02
WIND SPD 3 2 3 3 3 3 6 9 5 6 8 5 5 6 10 9 6 5 5 8 8
CLOUDS SC SC SC SC SC FW FW FW FW FW SC B1 B1 SC B2 B2 B2 B2 B2 B2 B2
CLOUDS(%) 32 30 36 38 29 22 24 9 10 23 29 55 63 45 77 77 85 85 70 77 72
VSBY 7 7 7 5 6 7 7 7 7 7 7 7 7 7 4 4 4 4 6 6 7
POP 12HR 10 5 10 70 80
QPF 12HR 0 0 0 0.46 0.47
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S L L D D L L C
TSTMS S S C L C C C S S
Obvis PF PF
MIX HGT 500 600 1100 1000 800 700 900 900 700 1200
T WIND DIR E NE NE SW SW SW S S SE NE
T WIND SPD 4 3 2 5 8 8 13 18 17 8
SMOKE DISP PR PR PR PR PR PR PR PR PR PR
ADI 3 5 4 9 7 9 20 19 16 15
MAX LVORI 7 7 5 4 6 7 5 4 6 9
STABILITY F F A B F E C C E E
CEILING 6600 300 300 30000 30000 7200 4700 8000 300 300
PRESSURE 29.85 29.87 29.90 29.89 29.92 29.92 29.95 29.90 29.87 29.97
Date 08/21Sat 08/22/26Sun 08/23/26Mon 08/24/26Tue 08/25/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN 80 72 80 73 82 71 81 72 81
TEMP 79 78 75 74 78 77 75 75 79 77 74 72 78 77 74 73 78 78
DEWPT 72 73 73 73 73 74 74 74 73 72 70 68 67 68 68 69 68 69
MIN/MAX RH 79 98 82 100 77 90 66 87 68
RH 79 85 93 97 85 90 96 98 82 84 88 88 69 73 81 87 71 75
WIND DIR NE E E SE S SE S W SW W NW NW W SW S S S S
WIND SPD 9 8 8 6 8 6 5 5 9 6 6 8 6 5 6 8 8 6
AVG CLOUDS B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 SC FW FW FW FW FW SC SC
POP 12HR 40 70 70 50 40 20 5 10 20
RAIN SHWRS C C L L L L C C C C S S
TSTMS C C C C S C C S S
$$
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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