Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
201 AM EDT Sun Aug 16 2026
VAZ018-170800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
201 AM EDT Sun Aug 16 2026
Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue
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 70 86 70 87 67
TEMP 70 71 80 85 85 77 75 73 72 72 81 86 84 75 72 69 68 69
DEWPT 69 69 71 70 68 71 69 68 68 68 71 71 71 69 68 67 66 66
MIN/MAX RH 100 56 89 60 94
RH 97 93 74 61 57 82 82 84 87 87 72 61 65 82 87 93 93 90
WIND DIR SW W W W W W W W W W W W W NW NW NW NW NW
WIND SPD 3 2 3 5 5 4 5 6 8 8 8 6 6 5 3 2 2 3
WIND GUST 13 16 17 14 20 25 27 26 23 20 20 18 13
CLOUDS OV B2 SC B1 B1 B1 B1 OV B1 B1 B1 SC SC B1 SC SC SC SC
CLOUDS(%) 90 83 47 62 54 62 63 94 58 52 56 42 46 59 47 46 31 31
VSBY 7 7 10 10 10 10 9 9 9 6 10 10 10 10 10 10 10 1
POP 12HR 60 40 60 40 10
RAIN SHWRS SC IS IS SC SC SC SC NM IS
TSTMS IS IS IS IS IS SC IS IS
Obvis PF PF
MIX HGT <1 <1 3 4 4 <1 <1 <1 <1 1 3 5 4 1 <1 <1 <1 <1
T WIND DIR S S W W SW NW S W W W NW NW NW NW NW NW NW NW
T WIND SPD 2 3 13 13 14 5 2 5 8 11 14 13 14 11 3 3 3 4
DISPERSION VP VP PR PR PR PR VP VP VP
ADI 1 4 47 54 58 4 2 4 7 18 52 73 72 8 2 2 2 4
MAX LVORI 8 6 3 1 1 5 5 5 5 4 3 1 1 4 6 7 7 6
STABILITY F B A C C E E E D C B B B E F F G A
CEILING 100 None None 4200 2300 None None None None
STA PRES 27.90 27.88 27.78 27.75 27.73 27.74 27.70 27.71 27.72
Date 08/18Wed 08/19/26Thu 08/20/26Fri 08/21/26Sat 08/22/26
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 85 63 88 67 85 65 81 64 80
TEMP 85 73 65 66 86 78 69 69 84 72 67 65 80 70 66 66 80 70
DEWPT 66 63 59 61 65 64 63 64 69 66 63 63 68 65 63 63 67 64
RH 53 71 81 84 50 62 81 84 61 81 87 93 67 84 90 90 65 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW FW SC SC SC B1 B1 B1 B1 B2 B1 B1 B1 B1
POP 12HR 0 0 5 20 30 40 60 50 40
RAIN SHWRS IS IS IS SC SC SC SC NM SC IS IS SC
TSTMS SC 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