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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Tue Aug 25 2026
VAZ024-260800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
231 PM EDT Tue Aug 25 2026
Date 08/25/26 Wed 08/26/26 Thu 08/27/26 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 58 88 65 87 66
TEMP 83 72 66 63 60 63 80 86 84 76 71 68 67 68 80 86 84 76 71 69 67 69
DEWPT 60 56 55 55 54 56 61 64 67 66 65 65 64 66 69 69 69 68 68 67 66 67
MIN/MAX RH 82 48 94 56 96
RH 46 57 68 75 81 78 52 48 57 71 81 90 90 93 69 57 61 76 90 93 97 93
WIND DIR S S N N N N S S S S S S N N S S S S N N N N
WIND SPD 2 1 0 0 0 0 2 5 5 2 1 1 0 0 2 4 3 1 0 0 0 0
CLOUDS FW SC SC FW FW SC SC B1 B2 B1 B1 B1 SC SC B1 B2 B2 B2 B2 B2 B2 B1
CLOUDS(%) 7 32 28 11 7 29 44 60 84 57 63 53 37 50 62 76 76 71 73 76 70 68
VSBY 10 10 10 10 9 10 10 10 10 10 10 7 7 7 7 7 7 7 7 7 7 7
POP 12HR 0 5 20 60 60
RAIN SHWRS IS IS NM NM SC SC
TSTMS IS IS SC SC IS
MIX HGT 5 <1 <1 <1 <1 <1 3 6 4 <1 <1 <1 <1 <1 2 5 4 <1
T WIND DIR W S SE N N N S S SW S S S S S SW SW S NW
T WIND SPD 2 2 1 2 2 1 9 9 10 4 5 5 3 6 5 6 9 13
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 15 1 1 1 1 1 38 41 36 2 3 3 2 7 16 29 47 6
MAX LVORI 2 3 4 4 5 4 1 1 1 3 5 6 7 5 3 2 1 4
STABILITY A G G G G A A C C F F F G A B C B F
CEILING None None None None 4700 None None 700 3800 1000
STA PRES 28.56 28.60 28.60 28.62 28.54 28.53 28.52 28.52 28.48
Date 08/28Sat 08/29/26Sun 08/30/26Mon 08/31/26Tue 09/01/26
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 86 64 85 65 89 66 94 68 95
TEMP 85 75 68 66 82 74 67 68 86 78 69 69 91 82 71 71 92 83
DEWPT 69 69 67 66 69 68 67 67 69 68 67 67 67 68 68 68 68 68
RH 59 82 97100 65 82100 97 57 71 93 93 45 63 90 90 46 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC FW SC SC SC SC SC
POP 12HR 60 20 40 5 20 5 5 0 20
RAIN SHWRS SC NM IS IS SC IS IS
TSTMS SC 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