EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Wakefield VA
510 PM EDT Tue May 19 2026
MDZ025-200800-
Assateague Island RAWS - Worchester MD
38.08N 75.20W Elev. 12 ft
510 PM EDT Tue May 19 2026
Date 05/19/26 Wed 05/20/26 Thu 05/21/26 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 64 71 60 65 55
TEMP 65 66 66 67 67 69 70 68 66 66 65 64 64 63 61 60 58 58 57 57 58
DEWPT 62 64 63 63 62 62 62 62 61 65 65 64 60 55 54 54 54 54 54 54 54
MAX/MIN RH 94 76 100 76 90
RH 88 93 91 88 85 78 76 79 85 95 99100 87 77 76 80 87 88 89 90 86
WIND DIR S S SW SW SW SW S S S SW W NE NE NE NE NE NE NE NE NE NE
WIND DIR DEG 19 20 21 21 21 21 19 19 20 21 28 03 03 04 04 04 05 05 05 05 06
WIND SPD 16 16 13 12 11 12 16 17 16 9 9 5 11 17 18 17 14 13 13 14 17
CLOUDS FW FW FW FW FW FW FW FW B1 B2 B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2
CLOUDS(%) 15 14 8 11 12 19 18 16 55 70 70 69 83 77 79 76 80 82 82 85 85
VSBY 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
POP 12HR 0 5 20 20 50
QPF 12HR 0 0 0 0 0.01
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S S S S S S S C C C C C
TSTMS S
MIX HGT 400 400 2100 1900 500 800 1800 1800 1600 1600
T WIND DIR SW SW SW S S NE NE NE NE NE
T WIND SPD 19 16 14 16 11 11 26 24 20 23
SMOKE DISP PR PR PR PR PR PR FR FR PR PR
ADI 18 16 39 38 13 20 50 48 25 42
MAX LVORI 5 5 4 4 8 9 4 4 4 5
STABILITY D D C C D E D D D D
CEILING 30000 30000 26600 30000 30000 3200 4000 4000 3200 2400
PRESSURE 30.06 30.02 30.05 29.98 29.98 30.02 30.18 30.20 30.26 30.23
Date 05/22Sat 05/23/26Sun 05/24/26Mon 05/25/26Tue 05/26/26
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 60 56 66 59 68 60 68 59 69
TEMP 58 57 59 60 63 61 62 63 65 62 62 63 66 63 62 63 66 63
DEWPT 53 55 58 60 61 61 62 62 62 61 62 62 61 61 62 62 61 60
MIN/MAX RH 80 100 92 100 87 100 85 100 80
RH 83 93 99 99 93100100 96 90 97100 98 86 94100 97 83 91
WIND DIR E E E E E NE NE NE E E S SW S S NE NE E E
WIND SPD 17 16 12 11 11 10 9 6 10 9 6 6 8 4 3 3 6 5
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2
POP 12HR 70 70 60 70 50 60 40 50 30
RAIN SHWRS C L C L C L L L C C L C C C C C C C
TSTMS S S S S S S S S S
$$
VAZ064-200800-
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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