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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1201 AM EDT Sun Aug 23 2026
VAZ018-240800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
1201 AM EDT Sun Aug 23 2026
Date 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue
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 62 78 57 78 54
TEMP 65 64 63 70 77 75 66 61 59 58 59 72 77 76 65 59 55 54 56
DEWPT 61 61 61 60 56 54 53 53 53 53 54 56 54 52 51 50 50 49 50
MIN/MAX RH 92 47 84 43 86
RH 87 90 93 71 48 48 63 75 80 83 83 57 45 43 60 72 83 83 80
WIND DIR W W W NW NW W NW W W W W W NW NW NW NW NW NW NW
WIND SPD 5 6 6 8 6 6 3 2 3 3 4 6 6 6 4 2 2 2 2
WIND GUST 20 23 25 23 20 19 13 20 18 18 16
CLOUDS FW FW FW FW CL CL FW CL CL CL CL FW FW FW SC FW FW FW FW
CLOUDS(%) 14 22 20 10 4 5 10 5 3 1 3 6 14 23 30 13 8 7 8
VSBY 9 9 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 0 0 0 0
RAIN SHWRS
TSTMS
MIX HGT <1 <1 1 4 6 6 <1 <1 <1 <1 <1 4 5 5 <1 <1 <1 <1 <1
T WIND DIR W W NW NW NW W W W W W NW W W W NW NW NW NW NW
T WIND SPD 6 12 18 24 17 14 16 11 3 4 4 17 11 11 6 3 3 3 2
DISPERSION PR PR VP VP VP VP VP VP VP VP
ADI 3 6 30116118101 7 5 2 2 4 83 68 70 3 2 2 2 2
MAX LVORI 6 6 4 3 1 1 3 3 4 5 4 1 1 1 3 3 5 5 5
STABILITY F F B B B B G G G G A B B B F G G G A
CEILING None None None None None None None None None
STA PRES 27.71 27.76 27.75 27.79 27.80 27.82 27.81 27.86 27.86
Date 08/25Wed 08/26/26Thu 08/27/26Fri 08/28/26Sat 08/29/26
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 82 59 86 65 84 65 85 64 85
TEMP 80 71 61 61 85 72 67 67 83 71 67 66 85 72 66 66 84 72
DEWPT 53 54 53 55 63 62 62 64 68 66 64 64 67 64 62 63 66 63
RH 39 55 75 81 48 71 84 90 61 84 90 93 55 76 87 90 55 73
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC SC SC B1 B1 B2 SC SC SC SC SC SC SC SC
POP 12HR 0 0 10 30 60 20 20 10 20
RAIN SHWRS SC SC NM IS IS IS
TSTMS IS IS SC 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
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