EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Wakefield VA
510 PM EDT Sun Sep 20 2026
MDZ021-210800-
Blackwater NWR RAWS-Dorchester MD
38.42N 76.00W Elev. 8 ft
510 PM EDT Sun Sep 20 2026
Date 09/20/26 Mon 09/21/26 Tue 09/22/26 Wed
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 68 78 66 71 60
TEMP 76 74 73 71 69 74 77 75 69 68 67 67 67 70 70 69 66 65 63 62 61
DEWPT 70 71 71 70 67 66 65 65 65 65 65 65 65 67 66 64 62 62 60 60 60
MAX/MIN RH 98 67 93 84 93
RH 82 89 94 98 92 77 67 71 85 91 92 93 93 90 85 85 87 90 91 93 94
WIND DIR S S W N N NE NE E NE NE NE NE NE NE NE NE NE NE NE NE NE
WIND DIR DEG 19 20 28 35 02 04 06 07 06 06 06 06 06 06 06 06 05 05 04 04 04
WIND SPD 4 2 2 3 5 8 8 9 6 5 5 6 10 11 13 14 11 12 12 13 13
CLOUDS B1 B2 B2 B1 SC SC SC B1 B2 B2 OV OV B2 B2 B2 B2 OV OV OV OV B2
CLOUDS(%) 68 78 71 60 50 45 45 60 73 71 88 91 85 85 86 86 89 88 89 88 82
VSBY 7 7 7 7 7 7 7 7 7 7 7 7 4 4 4 4 6 6 6 6 7
POP 12HR 50 10 60 80 60
QPF 12HR 0.10 0 0.24 0.92 0.30
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS C C C S S C D D L L L L L L C
TSTMS C S S S
MIX HGT 500 900 3300 3300 1300 1300 2100 2100 1200 2200
T WIND DIR S N NE NE NE NE NE NE NE NE
T WIND SPD 5 11 12 12 12 14 21 21 18 20
SMOKE DISP PR PR PR PR PR PR FR FR PR FR
ADI 7 15 39 41 12 20 47 49 19 43
MAX LVORI 8 8 4 4 6 6 4 4 5 5
STABILITY F F B D E D D D D D
CEILING 3500 2500 17300 1700 300 300 300 1000 300 300
PRESSURE 29.87 29.90 30.0 30.01 30.05 30.04 30.09 30.09 30.14 30.15
Date 09/23Thu 09/24/26Fri 09/25/26Sat 09/26/26Sun 09/27/26
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 68 58 69 56 68 55 71 56 73
TEMP 67 66 62 61 67 65 59 58 67 63 57 58 70 65 58 59 72 67
DEWPT 61 59 58 58 60 57 55 53 55 53 52 53 55 55 54 55 57 57
MIN/MAX RH 78 90 73 88 62 87 56 91 55
RH 81 78 86 90 79 76 84 84 66 70 83 83 60 70 86 87 59 71
WIND DIR NE NE NE NE NE NE N N N N N N N N N N N N
WIND SPD 14 11 9 11 13 10 8 10 12 8 6 10 11 3 3 5 9 3
AVG CLOUDS B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 SC B1 SC SC SC SC SC SC
POP 12HR 50 30 20 20 30 20 20 10 10
RAIN SHWRS C C C C S S S S S C S S S S
$$
MDZ022-210800-
Powellville RAWS - Wicomico MD
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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