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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Sun Jul 26 2026
VAZ024-262000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
131 PM EDT Sun Jul 26 2026
Date Sun 07/26/26 Mon 07/27/26 Tue 07/28/26
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 87 64 88 67 90
TEMP 85 87 77 72 67 65 69 81 87 88 82 73 69 68 70 80 86 89 82
DEWPT 64 64 68 67 66 65 66 68 65 65 66 68 68 67 69 73 73 73 70
MAX/MIN RH 46 98 46 100 60
RH 50 46 74 84 97100 90 65 48 47 58 84 97 97 97 79 65 59 67
WIND DIR W W NE SE SE NW W N W W W NW SW SW W W W W W
WIND SPD 2 3 1 1 1 2 1 2 3 4 2 3 1 1 2 5 6 6 4
WIND GUST 16 20 18 17
CLOUDS SC SC B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1 OV OV OV OV B1
CLOUDS(%) 41 39 55 40 32 42 42 26 63 66 51 60 64 64 95 95 93 93 51
VSBY 10 10 10 9 6 3 5 10 10 10 7 7 6 6 6 6 6 6 7
POP 12HR 20 30 20 40 80
RAIN SHWRS IS SC IS IS SC SC O O NM NM SC
TSTMS IS IS IS IS NM SC IS
Obvis PF PF
MIX HGT 5 5 <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 <1 2 4 3 1
T WIND DIR NW W N E S NW NW N W W NW NW NW NW W W SW SW W
T WIND SPD 4 4 5 2 2 4 3 3 4 10 12 8 2 2 3 6 13 18 9
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 31 27 3 1 1 2 3 16 29 41 6 4 1 1 4 22 49 69 6
MAX LVORI 1 2 3 5 8 8 6 3 2 1 3 6 7 10 9 3 1 1 3
STABILITY A A F G G F A A B C F F F F B B C B E
CEILING None None None None 4500 17800 35000 9100 6800
STA PRES 28.35 28.38 28.38 28.39 28.35 28.33 28.31 28.26 28.16
Date Wed 07/29/26Thu 07/30/26Fri 07/31/26Sat 08/01/26
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 65 88 61 86 62 88 64 87
TEMP 69 68 86 80 66 65 84 79 65 66 85 80 68 68 85 79
DEWPT 68 67 65 63 62 63 63 63 62 63 64 66 65 66 67 68
RH 97 97 50 56 87 93 49 58 90 90 50 62 90 93 55 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 FW FW SC CL CL FW SC FW FW FW SC SC SC B1 B1
POP 12HR 30 10 5 5 5 20 10 40
RAIN SHWRS SC IS IS SC
TSTMS 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