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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun Jul 12 2026
VAZ024-122000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 AM EDT Sun Jul 12 2026
Date Sun 07/12/26 Mon 07/13/26 Tue 07/14/26
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 81 63 77 60 87
TEMP 79 80 78 73 69 68 66 66 71 75 77 73 67 64 61 64 77 84 87 80
DEWPT 71 71 71 69 69 68 66 66 69 68 68 66 66 64 61 64 66 65 66 68
MAX/MIN RH 76 100 73 100 49
RH 77 74 79 87100100100100 93 79 74 79 97100100100 69 53 50 67
WIND DIR NE E E E NE NE NE NE E E E E NE N N N E E SE S
WIND SPD 1 2 2 2 1 1 2 3 3 4 4 2 1 0 1 1 1 2 2 1
CLOUDS B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC FW FW FW FW
CLOUDS(%) 85 82 86 86 84 79 84 76 78 70 70 56 68 46 35 37 16 15 8 8
VSBY 10 7 5 5 3 3 3 3 8 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 70 80 70 10 5
RAIN SHWRS SC NM NM NM O NM NM SC NM SC
TSTMS SC SC IS SC
Obvis PF PF PF
MIX HGT 2 2 2 <1 <1 <1 <1 <1 2 3 3 1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR E E E E E E NE E E SE SE SW NW N N NW E E SE SW
T WIND SPD 11 10 3 3 9 8 8 13 10 6 4 2 2 2 3 2 8 5 2 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 26 29 7 2 4 4 4 15 25 21 18 1 1 1 2 2 31 33 13 1
MAX LVORI 3 3 4 6 9 9 9 5 5 3 3 4 8 10 10 9 3 1 2 3
STABILITY B B B F F F F B B C B F F F G A A A A G
CEILING 400 4000 1700 800 1600 8700 None None None None
STA PRES 28.63 28.63 28.66 28.66 28.71 28.69 28.69 28.67 28.68 28.62
Date Wed 07/15/26Thu 07/16/26Fri 07/17/26Sat 07/18/26
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 63 96 68 97 67 94 67 93
TEMP 65 67 93 88 72 72 95 87 72 71 92 85 71 71 91 84
DEWPT 64 66 68 70 67 69 68 69 67 68 66 68 66 67 68 69
RH 97 97 44 55 84 90 42 55 84 90 43 57 84 87 47 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL CL CL CL FW SC FW FW FW SC SC SC SC SC
POP 12HR 0 5 0 20 5 20 10 20
RAIN SHWRS IS IS IS
TSTMS 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