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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 PM EDT Tue Jul 28 2026
VAZ012-290800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
501 PM EDT Tue Jul 28 2026
Date 07/28/26 Wed 07/29/26 Thu 07/30/26 Fri
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 60 76 52 77 51
TEMP 74 67 65 62 62 69 73 74 67 61 58 55 56 68 73 76 70 59 55 52 58
DEWPT 68 66 64 62 62 61 60 59 59 58 57 55 56 57 58 58 57 56 54 52 56
MIN/MAX RH 100 59 100 54 100
RH 82 97 97100100 76 64 59 75 90 96100100 68 59 54 63 90 96100 93
WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW N N N
WIND SPD 4 4 3 3 4 5 5 5 4 2 2 2 2 3 3 3 2 1 0 0 0
WIND GUST 14 14 13 16
CLOUDS B1 SC FW SC SC FW FW FW FW FW FW FW FW FW FW FW CL CL CL FW FW
CLOUDS(%) 54 47 24 49 38 24 15 15 14 16 17 7 6 8 12 11 1 4 2 7 11
VSBY 10 10 10 7 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 30 0 0 0 0
RAIN SHWRS SC
TSTMS IS
MIX HGT 1 <1 <1 <1 1 3 4 4 1 <1 <1 <1 1 3 4 5 1
T WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW N N N NW
T WIND SPD 9 13 12 11 17 25 20 20 17 11 12 5 13 16 13 16 9
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 6 9 6 5 33101108117 8 5 6 3 23 69 77 98 4
MAX LVORI 4 6 7 9 4 3 1 1 3 6 6 9 5 1 1 1 3
STABILITY E E G F A A A A F G G G A A A A G
CEILING None None None None None None None None None
STA PRES 27.02 27.05 27.11 27.12 27.18 27.19 27.22 27.22
Date 07/31Sat 08/01/26Sun 08/02/26Mon 08/03/26Tue 08/04/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 83 60 82 63 78 64 80 63 82
TEMP 79 75 63 64 79 74 66 66 74 71 65 66 75 72 64 65 77 73
DEWPT 58 60 57 60 61 63 62 65 67 66 64 65 67 66 63 65 66 66
RH 49 60 81 87 54 69 87 97 79 84 97 97 76 81 97100 69 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC B1 B2 B2 B2 B2 OV B2 B2 B2 B2 B1 SC SC B1 B2
POP 12HR 0 0 20 40 70 40 50 20 60
RAIN SHWRS IS SC SC SC NM SC IS SC SC IS IS NM
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
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