Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Fri Aug 14 2026
VAZ046-150800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
231 AM EDT Fri Aug 14 2026
Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun
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 72 91 70 88 70
TEMP 72 73 82 87 88 79 74 73 71 72 80 85 85 78 74 72 71 72
DEWPT 68 69 72 74 74 74 73 72 71 72 73 74 74 73 72 71 71 72
MIN/MAX RH 89 60 100 66 100
RH 87 87 72 65 63 85 97 97100100 79 70 70 85 93 97100100
WIND DIR N N NW W W NE NE N N NE NE N NE NE E S S S
WIND SPD 3 3 3 4 5 3 3 2 2 3 4 4 4 2 1 1 2 3
CLOUDS SC SC B1 B1 B2 B1 B1 B1 B1 SC B1 B1 SC B1 B1 B1 B1 B1
CLOUDS(%) 47 42 67 57 72 69 65 57 61 46 60 60 50 52 54 64 59 65
VSBY 10 9 10 10 10 10 9 4 4 5 10 10 10 10 10 10 10 10
POP 12HR 5 60 50 40 30
RAIN SHWRS IS SC SC IS SC SC IS IS SC IS SC SC IS IS
TSTMS IS IS SC IS IS IS SC IS
MIX HGT <1 <1 3 4 4 <1 <1 <1 <1 <1 3 3 3 <1 <1 <1 <1 <1
T WIND DIR NW N SW W W SW SW N NE NE NE NE N NE E SE SE S
T WIND SPD 2 1 5 8 6 4 1 2 4 10 9 5 11 9 4 9 5 5
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 1 1 19 31 33 2 1 1 2 11 28 19 46 4 2 4 3 6
MAX LVORI 6 6 3 1 1 5 9 8 9 7 3 3 1 5 6 9 9 8
STABILITY F A B C B F F F F A C C A F F F F B
CEILING None 4500 5800 6000 1100 None None 4100 1400
STA PRES 29.29 29.33 29.31 29.34 29.35 29.39 29.39 29.40 29.38
Date 08/16Mon 08/17/26Tue 08/18/26Wed 08/19/26Thu 08/20/26
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 92 73 94 70 89 68 90 70 94
TEMP 88 83 75 75 92 84 73 72 86 80 70 70 87 82 73 72 91 83
DEWPT 75 74 72 72 74 73 70 69 70 68 66 67 70 69 69 70 70 70
RH 66 74 90 90 56 70 90 90 59 67 87 90 57 65 87 93 50 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC SC SC SC B1 B1 SC SC SC SC SC SC FW FW FW SC
POP 12HR 30 20 20 30 10 10 10 10 20
RAIN SHWRS SC IS IS SC IS
TSTMS SC IS 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