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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sun Aug 23 2026
VAZ046-240800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 PM EDT Sun Aug 23 2026
Date 08/23/26 Mon 08/24/26 Tue 08/25/26 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 TEMP 58 86 57 86 61
TEMP 67 63 60 62 78 82 84 74 66 61 57 59 76 80 85 77 67 63 61 63
DEWPT 51 51 51 54 58 56 53 52 51 51 51 53 55 55 54 55 55 56 55 58
MIN/MAX RH 76 35 81 35 84
RH 56 65 72 75 50 41 34 46 58 70 80 80 48 42 35 47 65 78 81 84
WIND DIR NW W W W W W W NW N N NW NW N W SW E E N N N
WIND SPD 3 2 2 3 5 8 8 4 4 3 2 2 2 2 3 2 1 1 1 2
CLOUDS CL SC FW CL CL CL FW FW CL FW FW SC FW FW FW CL CL FW FW FW
CLOUDS(%) 4 27 19 2 3 4 13 7 0 13 16 31 11 9 8 3 5 16 12 23
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 4 7 7 <1 <1 <1 <1 <1 4 5 6 <1
T WIND DIR W W W W W W W NW NW N W W N N S NE
T WIND SPD 3 2 2 2 17 13 11 3 4 3 2 1 4 1 2 1
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 1 2 96103 90 2 2 2 1 1 23 8 16 1
MAX LVORI 3 3 3 3 1 1 1 2 3 3 4 4 2 2 2 2
STABILITY G G G A A B B F F G G A A A A G
CEILING None None None None None None None None None
STA PRES 29.28 29.28 29.31 29.29 29.35 29.38 29.39 29.34
Date 08/26Thu 08/27/26Fri 08/28/26Sat 08/29/26Sun 08/30/26
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 TEMP 89 67 88 66 89 67 87 66 88
TEMP 84 79 68 68 82 78 69 68 85 79 69 68 83 78 68 68 83 79
DEWPT 66 65 66 68 71 70 69 68 70 69 68 67 70 68 67 67 70 69
RH 55 62 93100 69 76100100 61 72 97 97 65 71 97 97 65 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 SC B1 B2 B1 SC SC SC SC SC FW SC B1 SC SC SC
POP 12HR 5 30 60 40 20 20 10 30 20
RAIN SHWRS SC SC SC NM SC IS IS SC IS IS
TSTMS IS SC IS IS IS IS
$$
This product is for planning and review purposes only and is not
to be substituted for an official fire weather spot forecast. The
data displayed are calculated from a 2.5 by 2.5 km digital
database and only approximates weather conditions in highly
varying terrain. Please relay any comments you have to the NWS via
email at rnk.webmaster@noaa.gov.
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 humdity
RH(%)...............................Relative humidity
WIND DIR(8 POINT COMPASS)...........Wind direction
WIND SPD(MPH).......................Wind speed
CLOUDS(CATEGORY)....................Cloud cover category
EXAMPLE: CL = CLEAR; FW = FEW; SC = Scattered; BK = Broken; OV = Overcast
CLOUDS(%)...........................Cloud cover as a percentage
VSBY................................Visibility value in statute miles
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER...
TYPE...
RAIN...........Rain
RAIN SHWRS.....Rain showers
TSTMS..........Thunderstorms
DRIZZLE........Drizzle
SNOW...........Snow
SNOWSHWRS......Snow showers
SLEET..........Sleet
FRZG RAIN......Freezing rain
FRZG DRZL......Freezing drizzle
COVERAGE...
IS.............Isolated
SC.............Scattered
NM.............Numerous
O..............Occasional
S..............Slight chance
C..............Chance
L..............Likely
WD.............Widespread
D..............Definite
AR.............Areas
PA.............Patchy
MIX HGT(THOUSANDS OF FT AGL)........Mixing height
Example: 6 = 6000 feet; 12 = 12000 feet; <1 = Less than 1000 foot
t WIND DIR(8 POINT COMPASS).........Transport Wind direction
T WIND SPD(MPH).....................Transport Wind speed
DISPERSION(CATEGORY)................Smoke Dispersion category
Values: vp =Very Poor;PR = Poor; FR = Fair; GD = Good;
ADI (INDEX).........................Atmospheric Dispersion Index
MAX LVORI (INDEX)...................Low Visibility Occurrence Risk Index
STABILITY (CATEGORY)................Pasquill Turner Stability
CEILING (FT)........................Ceiling
STA PRES (INCHES MERCURY)...........Station pressure
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 SPD(MPH).......................Wind Speed
Example: <15 = less than 15 MPH; 15> = 15 MPH or greater
AVE CLOUDS(CATEGORY)................Average Cloud Cover Category
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER.............................See Day 1 through 3 weather descriptions