EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Wakefield VA
510 AM EDT Wed Aug 19 2026
MDZ022-192000-
Powellville RAWS - Wicomico MD
38.35N 75.42W Elev. 16 ft
510 AM EDT Wed Aug 19 2026
Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26
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 88 70 88 68 82
TEMP 72 82 86 86 78 73 72 71 74 83 84 83 76 72 71 70 70 77 79 79 74
DEWPT 72 71 68 67 70 69 69 70 72 73 74 73 73 72 71 69 70 71 71 71 70
MIN/MAX RH 50 100 68 100 77
RH 100 69 55 53 75 87 90 96 94 73 72 72 89100 99 98100 82 77 77 87
WIND DIR NW NW W W S S S SW S S S S SE N N N N NE E E E
WIND DIR DEG 31 29 28 28 16 18 20 21 17 20 19 17 14 02 34 00 01 05 07 09 09
WIND SPD 2 3 4 4 2 2 3 3 2 3 4 4 2 2 2 3 3 4 4 5 3
CLOUDS B1 FW SC FW CL FW FW FW SC B1 B2 B1 B2 B2 B1 B1 B1 B1 B1 B1 B1
CLOUDS(%) 58 10 28 11 3 6 8 18 33 51 71 66 81 75 61 69 63 55 62 62 69
VSBY 5 7 7 7 7 7 7 7 7 7 4 7 4 4 7 7 7 7 7 7 7
POP 12HR 5 5 60 60 40
QPF 12HR 0 0 0.54 0.60 0.08
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S L C L L S S S S C C C
TSTMS S C S C S
Obvis PF
MIX HGT 5900 5800 400 400 4000 2300 700 1100 3300 3400
T WIND DIR NW W S S SW SW NW N NE E
T WIND SPD 4 6 3 4 16 17 9 13 9 6
SMOKE DISP FR FR PR PR GD FR PR PR PR PR
ADI 66 71 2 6 91 62 6 16 29 25
MAX LVORI 8 4 7 10 4 6 9 9 5 6
STABILITY A A F F A B F F C C
CEILING 30000 30000 30000 7200 7200 7200 7200 8000 5400 4700
PRESSURE 29.87 29.84 29.86 29.88 29.90 29.88 29.93 29.95 30.01 30.01
Date Sat 08/22/26Sun 08/23/26Mon 08/24/26Tue 08/25/26
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 67 82 68 84 66 83 65 83
TEMP 70 70 79 76 71 71 82 77 69 69 81 76 67 68 80 76
DEWPT 69 70 73 72 71 71 71 71 68 68 66 66 64 65 66 66
MAX/MIN RH 100 80 100 67 100 58 93 60
RH 100100 82 87100100 69 82 98 97 60 71 90 90 62 72
WIND DIR E E E SE SW W W SW W NW NW S W NW SW SE
WIND SPD 1 3 4 2 1 2 4 2 2 3 4 2 1 3 4 2
AVG CLOUDS B2 B2 B2 B2 B1 B1 B1 B1 SC SC FW FW FW FW FW SC
POP 12HR 70 70 40 30 20 10 5 10
RAIN SHWRS C L L L C S S C S
TSTMS C C S S S S S C
$$
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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