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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sat Aug 22 2026
VAZ024-222000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 AM EDT Sat Aug 22 2026
Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26
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 83 65 85 57 83
TEMP 75 81 81 76 67 66 65 66 76 83 80 71 64 60 57 60 76 83 80 70
DEWPT 68 68 67 68 66 65 63 63 63 58 56 56 56 56 55 56 57 55 54 53
MAX/MIN RH 62 99 40 94 37
RH 79 65 63 76 97 97 93 90 64 43 44 59 75 87 93 87 52 38 41 55
WIND DIR SE S S SE S W W W NW W W W W W W W W W NW NW
WIND SPD 1 3 4 3 2 2 3 3 5 6 6 4 1 1 1 1 5 5 6 3
WIND GUST 13 16 17 18 14 16 17 13
CLOUDS B1 SC B1 B2 B1 SC CL CL CL CL FW FW FW FW CL CL CL FW FW FW
CLOUDS(%) 66 50 54 73 69 32 4 3 3 3 22 8 8 8 0 1 5 9 9 10
VSBY 7 10 10 10 8 7 8 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 50 0 0 0
RAIN SHWRS IS SC SC SC
TSTMS IS SC IS
MIX HGT 2 4 4 <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 5 6 6 <1
T WIND DIR NE E SE S S SW W NW NW NW W W NW NW NW NW W W W W
T WIND SPD 5 4 5 5 6 4 5 10 18 16 12 6 3 3 2 3 13 12 11 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 15 22 21 3 3 2 3 10 93112 87 3 2 2 1 3 85 95 79 1
MAX LVORI 4 3 2 4 9 8 6 5 1 1 1 3 4 6 7 6 1 1 1 3
STABILITY B A C F F G G A A B B F G G G A A A B G
CEILING 1700 1700 14100 None None None None None None None
STA PRES 28.50 28.44 28.42 28.39 28.45 28.45 28.50 28.50 28.54 28.52
Date Tue 08/25/26Wed 08/26/26Thu 08/27/26Fri 08/28/26
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 55 86 59 88 64 86 64 89
TEMP 58 57 85 74 63 62 85 77 67 68 85 76 67 67 87 78
DEWPT 53 53 55 57 57 58 65 65 66 67 70 69 67 67 69 69
RH 83 86 36 55 81 87 51 67 97 97 61 79100100 55 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW SC SC B1 B1 B1 B2 B1 SC SC B1
POP 12HR 0 0 0 10 20 60 40 30
RAIN SHWRS IS IS SC NM SC SC
TSTMS IS SC 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