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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1131 AM EDT Sun Aug 23 2026
VAZ046-232000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1131 AM EDT Sun Aug 23 2026
Date Sun 08/23/26 Mon 08/24/26 Tue 08/25/26
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 TEMP 84 59 85 57 86
TEMP 83 84 74 67 63 60 62 78 83 84 74 65 60 57 59 77 83 85 76
DEWPT 59 56 55 54 53 53 56 57 56 54 53 51 51 50 53 55 55 55 56
MAX/MIN RH 38 81 35 82 35
RH 44 38 51 63 70 78 81 48 40 36 48 60 72 77 80 47 38 36 50
WIND DIR NW W W NW W W W W W W NW NW N N NW N W SW SE
WIND SPD 9 9 4 3 2 2 3 5 8 8 4 4 2 2 2 2 3 3 2
CLOUDS CL CL CL CL SC FW CL CL CL FW FW FW FW FW FW FW FW FW CL
CLOUDS(%) 3 4 1 4 27 19 2 2 4 14 7 9 12 13 18 17 7 6 2
VSBY 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 7 7 <1 <1 <1 <1 <1 5 7 7 <1 <1 <1 <1 <1 4 6 6 <1
T WIND DIR W W W W W W W W W W NW NW N N N NW W SW S
T WIND SPD 12 11 4 6 2 2 1 11 10 9 5 4 3 3 2 3 4 3 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 90 89 2 3 1 1 1 64 74 70 3 2 2 2 2 16 32 26 1
MAX LVORI 1 1 2 3 3 4 4 1 1 1 2 3 3 4 4 2 1 2 2
STABILITY B B F G G G A B B B F F G G A A A A G
CEILING None None None None None None None None None
STA PRES 29.21 29.27 29.29 29.31 29.29 29.34 29.36 29.39 29.33
Date Wed 08/26/26Thu 08/27/26Fri 08/28/26Sat 08/29/26
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 TEMP 60 88 66 87 66 89 67 88
TEMP 63 63 86 78 69 68 84 77 69 69 87 79 69 69 85 78
DEWPT 56 58 66 65 67 68 71 70 69 69 70 69 68 68 69 68
RH 78 84 51 64 93100 65 79100100 57 72 97 97 59 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC SC SC B1 B1 B2 B1 SC SC SC SC SC SC SC
POP 12HR 0 10 20 60 30 20 20 20
RAIN SHWRS IS IS SC NM SC IS IS IS
TSTMS IS 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