EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Wakefield VA
510 AM EDT Sun Sep 20 2026
VAZ081-202000-
James River NWR RAWS-Prince George VA
37.25N 77.25W Elev. 50 ft
510 AM EDT Sun Sep 20 2026
Date Sun 09/20/26 Mon 09/21/26 Tue 09/22/26
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 87 69 83 67 77
TEMP 68 79 85 86 77 73 72 70 70 78 81 80 73 70 69 68 68 73 75 74 68
DEWPT 65 67 68 69 70 69 68 68 68 71 71 70 69 68 67 67 67 69 70 69 67
MIN/MAX RH 56 94 70 97 83
RH 91 67 57 57 78 87 88 93 94 79 72 71 86 93 93 97 95 87 83 85 97
WIND DIR S S SW S SW SW SW W N N NE NE NE N NE N N N N N NE
WIND DIR DEG 16 19 22 19 20 23 23 27 00 02 03 04 05 01 04 01 00 01 02 02 03
WIND SPD 1 5 6 5 3 3 3 2 3 6 5 8 6 4 3 3 5 8 10 10 10
CLOUDS B1 SC SC SC SC SC SC SC SC B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 OV
CLOUDS(%) 54 42 39 35 50 45 40 41 49 55 58 73 87 86 83 84 81 83 82 83 88
VSBY 7 7 7 7 7 7 7 7 7 7 7 7 6 6 6 6 4 4 4 4 4
POP 12HR 10 20 60 70 80
QPF 12HR 0.01 0 0.06 0.21 0.73
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S C L L L L L L D D L
TSTMS S C C S
MIX HGT 4400 4200 400 800 3400 3000 800 1100 2200 2300
T WIND DIR S SW S S NE NE NE N N NE
T WIND SPD 9 8 4 3 9 11 8 8 9 16
SMOKE DISP FR FR PR PR PR PR PR PR PR PR
ADI 61 58 3 7 27 27 7 7 30 35
MAX LVORI 4 4 6 8 5 5 7 7 6 5
STABILITY B B F F D D E E D D
CEILING 4700 4700 4000 4000 3600 1000 300 300 300 300
PRESSURE 29.92 29.81 29.79 29.79 29.87 29.89 29.93 29.92 29.93 29.96
Date Wed 09/23/26Thu 09/24/26Fri 09/25/26Sat 09/26/26
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 63 71 59 70 55 69 53 71
TEMP 64 63 69 66 63 60 67 64 58 56 67 62 56 54 69 63
DEWPT 64 63 67 65 62 60 65 62 57 55 58 57 52 52 56 56
MAX/MIN RH 100 93 100 86 99 68 95 59
RH 99 99 95 98 98100 93 96 97 95 73 84 87 94 62 79
WIND DIR NE N N NE N N N N N N N N N N N N
WIND SPD 8 10 12 9 5 9 11 9 3 6 9 3 2 3 6 2
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC SC SC
POP 12HR 60 60 50 40 20 20 10 20
RAIN SHWRS L L L L C C C C S S S S S
TSTMS S S S S
$$
disswamp-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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