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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Aug 15 2026
VAZ018-160800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 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 69 88 71 87 68
TEMP 72 71 70 71 81 86 86 77 75 73 72 72 83 86 84 75 72 70 68 69
DEWPT 71 70 70 70 74 73 73 71 70 68 68 68 72 71 71 70 69 68 67 67
MIN/MAX RH 100 63 88 61 96
RH 97 97100 97 79 65 65 82 84 84 87 87 70 61 65 84 90 93 97 93
WIND DIR S SW W W W W W W W W W W W W W NW W NW NW NW
WIND SPD 2 3 3 2 4 5 5 4 5 6 6 6 8 8 6 5 4 3 2 3
WIND GUST 17 18 16 19 23 23 23 23 21 20 17
CLOUDS B1 B2 B2 B2 SC FW FW SC SC B1 B1 SC SC B1 B1 SC B1 SC SC SC
CLOUDS(%) 60 80 82 70 33 23 16 43 31 55 58 35 41 56 56 48 51 41 35 30
VSBY 6 5 5 3 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 30 30 30 30 20
RAIN SHWRS IS IS SC IS IS SC SC IS IS
TSTMS IS IS SC SC IS
Obvis PF PF PF
MIX HGT <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 1 3 5 4 1
T WIND DIR SE SE S S SW W SW SW SW W W NW NW NW W W
T WIND SPD 2 4 5 8 10 13 17 8 3 4 11 12 17 14 13 11
DISPERSION VP VP VP VP PR PR PR PR VP VP VP
ADI 1 2 3 8 41 85106 5 2 3 8 17 73 60 49 8
MAX LVORI 7 8 8 8 3 1 1 5 5 5 5 4 1 1 1 4
STABILITY F F F B A A A E F E E B B C C E
CEILING 4900 100 None None None None None None None
STA PRES 27.92 27.90 27.87 27.75 27.74 27.73 27.75 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 84 64 80 63 79
TEMP 85 75 66 66 86 77 69 69 83 74 66 65 78 71 66 63 77 71
DEWPT 67 64 60 61 66 64 63 64 68 65 63 62 66 63 61 60 65 63
RH 55 69 81 84 51 64 81 84 61 74 90 90 67 76 84 90 67 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW FW FW SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR 5 0 5 20 30 40 40 50 30
RAIN SHWRS IS SC SC SC SC SC 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
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