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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1131 AM EDT Sun Aug 23 2026
VAZ024-232000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
1131 AM EDT Sun Aug 23 2026
Date Sun 08/23/26 Mon 08/24/26 Tue 08/25/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 84 57 84 53 86
TEMP 83 81 71 63 60 57 60 76 83 81 70 61 57 54 56 77 86 84 73
DEWPT 57 54 54 54 54 54 55 57 54 53 52 52 51 50 52 55 54 54 56
MAX/MIN RH 38 87 35 92 33
RH 41 39 55 72 81 90 84 52 37 38 53 72 80 86 86 47 34 36 55
WIND DIR NW NW W W N NW NW W W NW NW NW NW NW NW NW W SW N
WIND SPD 6 6 3 1 0 1 1 4 5 5 3 2 1 1 1 1 2 2 0
WIND GUST 18 18
CLOUDS FW CL CL FW SC CL CL CL FW FW FW FW FW FW FW FW FW FW FW
CLOUDS(%) 8 5 2 7 33 1 1 5 6 8 18 13 9 7 13 15 10 16 21
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 6 5 <1 <1 <1 <1 <1 5 6 6 <1 <1 <1 <1 <1 3 5 7 <1
T WIND DIR NW W W W W NW NW W W W NW N NW NW NW NW W W S
T WIND SPD 14 13 9 3 2 3 2 16 11 10 4 3 3 3 2 5 4 3 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 100 86 4 2 1 2 2 93 85 78 2 2 2 2 2 25 31 27 1
MAX LVORI 1 1 3 3 5 6 5 1 1 1 2 3 5 6 6 2 1 2 3
STABILITY B B G G G G A A A A G G G G A A A A G
CEILING None None None None None None None None None
STA PRES 28.44 28.49 28.50 28.53 28.51 28.57 28.58 28.60 28.55
Date Wed 08/26/26Thu 08/27/26Fri 08/28/26Sat 08/29/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 58 88 64 87 64 90 64 89
TEMP 61 62 88 77 68 67 86 76 67 67 88 79 67 67 86 77
DEWPT 56 56 64 64 65 66 70 69 67 67 68 67 66 65 67 66
RH 84 81 45 64 90 97 59 79100100 52 67 97 93 53 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC SC SC B1 B1 B2 SC SC SC SC SC B1 SC SC
POP 12HR 0 10 20 60 20 20 20 20
RAIN SHWRS IS IS SC NM IS IS IS IS
TSTMS IS IS IS SC 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