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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Mon Aug 24 2026
VAZ018-250800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
231 AM EDT Mon Aug 24 2026
Date 08/23/26 Mon 08/24/26 Tue 08/25/26 Wed
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 58 78 54 83 59
TEMP 58 59 71 76 76 68 62 57 54 57 71 79 80 69 64 61 60 61
DEWPT 53 53 57 55 52 50 51 50 50 50 53 52 51 53 53 52 52 54
MIN/MAX RH 88 44 86 36 79
RH 83 80 61 48 43 52 67 77 86 77 53 39 36 57 67 72 75 78
WIND DIR W W W W NW NW N NW NW NW N W W W NW N N S
WIND SPD 2 3 5 6 8 8 4 3 1 1 1 1 2 1 1 1 0 1
WIND GUST 13 17 17
CLOUDS CL CL CL FW FW FW FW FW FW SC SC SC SC FW FW FW FW SC
CLOUDS(%) 0 1 4 12 13 11 16 9 9 26 31 30 38 22 19 17 18 37
VSBY 10 8 10 10 10 10 10 10 9 6 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 5 6 5 <1 <1 <1 <1 <1 3 5 6 <1 <1 <1 <1 <1
T WIND DIR W W W W W NW NW NW NW NW N W SW SE S NW NW NW
T WIND SPD 3 4 18 12 13 6 5 3 4 2 5 3 4 2 2 2 2 1
DISPERSION VP PR VP VP VP VP VP VP VP
ADI 2 4109 82 82 5 3 2 2 2 23 22 33 1 1 1 1 1
MAX LVORI 5 4 1 1 1 2 3 4 5 4 2 2 1 3 3 3 4 4
STABILITY G A A B B E F G G A A A A G G G G A
CEILING None None None None None None None None None
STA PRES 27.79 27.82 27.82 27.87 27.88 27.90 27.85 27.87 27.87
Date 08/26Thu 08/27/26Fri 08/28/26Sat 08/29/26Sun 08/30/26
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 86 65 85 64 84 64 85 66 86
TEMP 84 73 67 67 83 73 66 66 82 73 66 66 83 74 67 67 84 76
DEWPT 63 62 62 63 68 66 63 64 67 65 62 63 66 64 63 64 67 65
RH 49 68 84 87 61 79 90 93 61 76 87 90 57 71 87 90 57 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B1 B1 B2 SC SC SC B1 FW FW FW FW FW SC SC SC
POP 12HR 20 30 60 30 30 5 10 10 20
RAIN SHWRS IS SC IS NM SC SC IS
TSTMS IS IS IS SC IS 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