Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 AM EDT Tue Aug 25 2026
VAZ018-252000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
831 AM EDT Tue Aug 25 2026
Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26
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 57 83 65 85
TEMP 69 76 79 71 65 62 60 61 77 83 79 70 68 67 65 66 78 84 79 71
DEWPT 52 54 52 54 52 53 51 54 63 66 67 65 64 63 63 65 69 68 69 66
MAX/MIN RH 38 82 56 96 60
RH 55 46 39 55 63 72 72 78 62 57 67 84 87 87 93 97 74 59 72 84
WIND DIR N N W NE W W NW S SE S S S S SW SW SW S SW S S
WIND SPD 1 2 2 2 3 3 3 2 3 4 4 3 2 1 1 1 2 3 3 1
CLOUDS FW FW FW FW FW FW FW SC SC B1 B1 B1 SC B1 SC SC SC B1 B1 B1
CLOUDS(%) 8 7 8 12 11 9 9 36 27 64 61 58 47 53 49 45 46 67 67 59
VSBY 10 10 10 10 10 8 6 6 10 10 10 4 10 10 10 0 1 10 10 10
POP 12HR 0 0 20 20 50
RAIN SHWRS IS IS IS IS IS SC SC SC
TSTMS IS IS SC SC SC
MIX HGT 3 5 6 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 2 6 3 <1
T WIND DIR N NE W SE S W N S S SW S S S S S S SW SW S S
T WIND SPD 5 2 2 1 1 2 1 1 13 10 13 6 10 3 2 1 4 5 11 12
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 22 15 16 1 1 1 1 1 47 44 41 3 5 2 1 1 14 37 45 6
MAX LVORI 2 2 2 3 3 3 4 4 1 1 1 5 5 7 7 7 3 1 3 5
STABILITY A A A G G G G A B C C F F F F A A B B F
CEILING None None None None None 3200 None None None 2000
STA PRES 27.91 27.87 27.89 27.88 27.89 27.82 27.82 27.80 27.80 27.75
Date Fri 08/28/26Sat 08/29/26Sun 08/30/26Mon 08/31/26
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 64 84 63 82 65 85 66 89
TEMP 66 66 83 72 65 65 81 73 67 67 84 75 68 68 87 78
DEWPT 64 64 68 65 62 63 67 65 63 64 67 65 64 64 67 65
RH 93 93 61 79 90 93 63 76 87 90 57 71 87 87 52 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 B1 SC B1 SC FW SC SC SC FW SC SC SC
POP 12HR 40 50 20 20 10 10 5 10
RAIN SHWRS SC SC IS IS
TSTMS SC SC 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