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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Thu Jul 23 2026
VAZ012-232000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
401 AM EDT Thu Jul 23 2026
Date Thu 07/23/26 Fri 07/24/26 Sat 07/25/26
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 72 60 69 60 76
TEMP 65 65 67 71 71 66 63 62 60 61 65 69 69 68 63 62 60 62 68 72 75 71
DEWPT 62 62 62 62 62 61 61 59 58 59 61 63 63 64 63 62 60 62 66 66 66 65
MAX/MIN RH 71 94 80 100 73
RH 90 90 84 73 73 84 93 90 93 93 87 81 81 87100100100100 93 81 74 81
WIND DIR N NE E SE SE SE SE SE E E SE SE SE SE SE SE SE S W W W W
WIND SPD 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 1 1 1 1 2 1 1
CLOUDS B1 B1 SC B1 B1 B1 OV B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B1 SC
CLOUDS(%) 65 65 50 64 52 55 88 80 75 80 85 84 74 60 85 78 86 83 75 71 68 43
VSBY 6 8 10 10 10 9 9 10 9 10 10 10 10 10 10 10 5 9 10 10 10 10
POP 12HR 20 30 50 70 60
RAIN SHWRS SC IS SC SC SC SC SC SC NM NM NM NM SC SC IS
TSTMS IS IS IS IS IS IS
Obvis PF
MIX HGT <1 <1 2 3 3 <1 <1 <1 <1 <1 2 2 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR N NE E E SE SE E E E E E E SE SE SE SE SE SE SW W W W
T WIND SPD 4 5 6 5 8 8 5 6 8 9 11 9 6 5 4 6 6 3 3 9 6 8
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 6 19 22 27 4 3 3 4 10 27 28 21 3 2 3 3 4 7 34 18 4
MAX LVORI 6 5 4 3 3 5 6 6 6 5 4 3 3 5 8 9 9 9 6 3 3 5
STABILITY F B A B B F F F F B B B B F F F F B B B B F
CEILING 200 None 1000 500 200 600 500 100 200 1400
STA PRES 27.35 27.33 27.36 27.35 27.37 27.35 27.34 27.31 27.32 27.28
Date Sun 07/26/26Mon 07/27/26Tue 07/28/26Wed 07/29/26
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 59 81 60 85 63 86 62 82
TEMP 62 62 77 73 62 62 80 76 65 65 81 77 66 64 78 74
DEWPT 62 62 65 65 61 62 65 66 63 65 68 67 64 64 65 64
RH 100100 67 76 97100 60 71 93100 65 71 93100 64 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B1 FW SC SC SC SC B1 B1 B1 B1 SC B1 B1
POP 12HR 20 40 10 10 30 40 50 30
RAIN SHWRS IS IS SC SC SC SC SC SC SC IS IS SC
TSTMS IS IS SC IS IS SC IS SC
$$
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