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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Sat Aug 15 2026
VAZ024-160800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
231 PM EDT Sat Aug 15 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 91 72 93 68
TEMP 85 78 74 72 71 71 81 88 89 82 76 74 72 73 87 92 91 81 75 70 68 70
DEWPT 74 74 72 72 71 71 75 75 75 74 73 71 70 71 73 72 72 71 71 70 68 69
MIN/MAX RH 100 61 93 52 100
RH 70 88 93100100100 82 66 64 77 90 90 93 93 63 52 54 72 87100100 97
WIND DIR E SE N N N SE SW SW SW SW SW W W W W W NW NW NW NW NW N
WIND SPD 2 1 0 0 0 1 3 4 4 2 2 2 2 2 4 5 5 3 1 1 1 0
WIND GUST 14 17 16
CLOUDS B1 SC B1 B1 B2 B2 SC B1 B1 SC SC B1 B1 SC FW SC SC SC SC SC FW SC
CLOUDS(%) 64 29 54 66 74 71 47 65 60 45 27 54 64 32 23 43 38 45 50 37 25 31
VSBY 10 10 8 6 4 3 10 10 10 9 10 9 10 10 10 10 10 10 10 10 10
POP 12HR 40 50 30 20 20
RAIN SHWRS SC IS IS SC SC IS SC SC IS IS IS IS IS
TSTMS SC IS IS IS IS SC SC IS IS IS IS
Obvis PF PF PF
MIX HGT 3 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 4 5 4 <1
T WIND DIR N SE SE SE S S S S S S W W W W NW NW W W
T WIND SPD 0 5 4 5 5 3 9 11 16 11 16 4 3 6 14 12 12 10
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 0 3 2 3 3 4 26 40 54 5 7 2 2 7 72 82 66 5
MAX LVORI 4 5 8 9 9 9 3 1 1 4 5 6 7 6 1 1 1 3
STABILITY B G F F F B A C C F G F F A A A A F
CEILING None None 700 None 2200 None None None None None
STA PRES 28.62 28.63 28.61 28.58 28.46 28.45 28.42 28.43 28.40
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 91 64 92 67 90 64 85 62 84
TEMP 89 81 68 67 90 83 71 69 88 79 68 65 83 75 65 65 82 76
DEWPT 67 65 64 63 66 66 67 67 68 67 65 63 65 64 63 63 65 64
RH 48 58 87 87 45 57 87 93 52 67 90 93 55 69 93 93 56 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR 5 5 5 20 30 40 40 50 30
RAIN SHWRS IS SC SC SC IS SC SC SC IS SC
TSTMS SC IS IS 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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