EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Wakefield VA
510 AM EDT Thu Aug 20 2026
MDZ022-202000-
Powellville RAWS - Wicomico MD
38.35N 75.42W Elev. 16 ft
510 AM EDT Thu Aug 20 2026
Date Thu 08/20/26 Fri 08/21/26 Sat 08/22/26
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 86 69 82 68 82
TEMP 75 83 84 82 75 72 72 71 71 78 80 80 75 72 71 70 71 77 80 80 76
DEWPT 72 74 74 74 73 72 72 70 70 72 73 73 72 72 71 69 71 72 74 73 73
MIN/MAX RH 70 100 75 100 79
RH 91 74 72 76 94100100 97 95 83 78 79 91100 99 99100 85 82 79 92
WIND DIR S S S S SW SE NW N N N NE NE E E E E SE S S SW S
WIND DIR DEG 20 19 19 18 23 14 29 35 00 02 04 04 07 09 10 07 11 17 19 21 20
WIND SPD 2 5 9 9 5 3 3 3 4 4 3 3 3 2 2 2 3 3 4 4 2
CLOUDS FW SC B1 B1 OV B2 B2 B2 B2 B2 B1 SC B2 B2 OV OV OV OV B2 B2 B1
CLOUDS(%) 20 27 51 63 90 76 75 82 78 73 58 43 70 70 90 90 89 89 82 82 69
VSBY 7 7 7 7 7 7 7 7 7 7 7 7 6 6 4 4 4 4 6 6 7
POP 12HR 50 40 40 90 80
QPF 12HR 0.53 0.75 0.03 0.72 0.43
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C C C C S S L L D D D D L L C
TSTMS S C C S S C C S S S C C C
MIX HGT 4700 4000 600 1100 2700 3100 400 600 1800 1800
T WIND DIR S S SW N NE E E E SE S
T WIND SPD 11 20 10 16 11 4 4 5 14 16
SMOKE DISP GD GD PR PR PR PR PR PR PR PR
ADI 90 78 10 23 29 21 2 9 41 43
MAX LVORI 5 5 9 9 4 6 10 10 7 6
STABILITY A C F F C B F F B C
CEILING 4700 8900 6300 1000 1000 13800 5500 4200 300 1700
PRESSURE 29.94 29.89 29.87 29.92 30.02 30.01 30.01 30.0 29.97 29.88
Date Sun 08/23/26Mon 08/24/26Tue 08/25/26Wed 08/26/26
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 68 84 65 82 63 82 65 83
TEMP 72 72 82 77 70 68 80 75 66 67 80 75 67 70 81 77
DEWPT 72 72 72 70 67 67 65 64 63 64 65 65 65 68 69 68
MAX/MIN RH 100 70 100 57 94 58 98 65
RH 100100 72 79 92 97 60 69 91 90 60 71 93 94 67 74
WIND DIR SW SW W W W NW W W W NW W SE S S S S
WIND SPD 1 2 4 2 2 3 3 2 1 2 3 2 1 3 5 3
AVG CLOUDS B1 B1 SC B1 SC SC FW FW FW FW FW SC FW FW SC B1
POP 12HR 40 50 20 5 0 5 10 30
RAIN SHWRS C S C S S C
TSTMS C C S S
$$
MDZ025-202000-
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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