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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 PM EDT Thu Sep 3 2026
VAZ024-040800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
501 PM EDT Thu Sep 3 2026
Date 09/03/26 Fri 09/04/26 Sat 09/05/26 Sun
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 72 96 71 93 64
TEMP 84 77 74 72 73 91 97 95 83 76 74 72 73 87 92 87 77 71 69 66 65
DEWPT 70 70 69 68 69 71 70 70 69 69 69 68 69 72 72 72 71 70 69 66 65
MIN/MAX RH 88 42 89 52 100
RH 63 79 84 87 87 52 42 45 63 79 84 87 87 61 52 61 82 97100100100
WIND DIR W N N N W W NW NW W NW N W NW NW NW N NE NE N NE NE
WIND SPD 1 0 0 0 1 2 5 5 2 1 0 1 1 3 4 3 1 1 0 1 2
CLOUDS FW FW CL CL CL FW FW B1 FW FW FW CL SC SC B2 B2 B2 B2 B2 B1 B1
CLOUDS(%) 25 15 5 3 5 6 22 59 17 11 6 0 40 40 79 79 78 78 73 63 58
VSBY 10 10 10 1 1 10 10 10 10 6 6 5 7 10 10 10 10
POP 12HR 20 40 5 70 70
RAIN SHWRS IS SC IS IS NM NM NM NM IS IS SC
TSTMS IS IS IS SC SC IS
Obvis PF PF
MIX HGT <1 <1 <1 <1 <1 4 7 4 <1 <1 <1 <1 <1 4 5 1 <1
T WIND DIR SW W NW N NW NW NW NW NW NW W W W NW W W W
T WIND SPD 3 3 2 3 2 13 13 14 2 2 2 3 4 11 17 19 11
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 1 2 2 69117 56 1 1 1 2 4 54 68 37 5
MAX LVORI 3 5 5 6 6 1 1 1 3 4 5 7 5 1 1 1 4
STABILITY G G G G A A A C G G G G A A C B F
CEILING None None None None None None None 4600 35000
STA PRES 28.50 28.52 28.52 28.47 28.46 28.43 28.42 28.34
Date 09/06Mon 09/07/26Tue 09/08/26Wed 09/09/26Thu 09/10/26
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 82 59 81 57 85 59 91 67 94
TEMP 78 73 63 61 78 72 61 59 83 75 64 62 89 80 69 68 91 79
DEWPT 66 63 61 60 62 60 58 58 62 61 59 59 65 64 63 64 67 66
RH 67 71 93 97 58 66 90 96 49 62 84 90 45 58 81 87 45 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC SC SC SC FW SC SC SC SC SC FW SC FW FW FW SC
POP 12HR 30 10 5 0 20 0 5 5 10
RAIN SHWRS SC 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