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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1031 PM EDT Sun Sep 13 2026
VAZ024-140800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
1031 PM EDT Sun Sep 13 2026
Date 09/13/26 Mon 09/14/26 Tue 09/15/26 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 66 87 54 83 55
TEMP 71 68 67 66 79 85 86 72 64 59 55 55 71 80 82 72 63 58 55 57
DEWPT 67 66 65 66 66 62 57 58 55 52 50 50 53 58 59 59 58 56 54 55
MIN/MAX RH 97 37 85 45 96
RH 87 93 93100 64 46 37 61 73 78 83 83 53 47 46 64 84 93 96 93
WIND DIR W NW NW N N N N NE NE NE N N SE SE SE SE N N N N
WIND SPD 1 1 1 2 3 4 4 3 2 1 0 0 2 3 3 1 0 0 0 0
CLOUDS CL FW FW FW SC FW FW FW SC FW FW FW FW FW FW FW FW FW CL CL
CLOUDS(%) 3 23 16 13 26 20 11 20 30 18 15 11 16 12 9 11 15 11 2 3
VSBY 4 3 2 2 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 0 0 0
Obvis PF PF PF
MIX HGT <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR NW W NW N N N N NE NE NE NE N E S S SE
T WIND SPD 6 3 3 5 13 10 9 3 5 4 3 2 3 2 1 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 3 2 2 6 67 67 50 2 3 2 2 2 13 10 5 2
MAX LVORI 6 8 10 8 1 1 1 3 3 4 5 5 2 2 2 3
STABILITY G G G B B B B G G G G A B B B G
CEILING None None None None None None None None
STA PRES 28.52 28.62 28.63 28.72 28.77 28.85 28.79
Date 09/16Thu 09/17/26Fri 09/18/26Sat 09/19/26Sun 09/20/26
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 89 60 92 63 90 64 84 63 87
TEMP 87 77 65 62 90 79 67 65 89 78 68 65 82 74 67 65 84 76
DEWPT 64 64 61 59 65 65 62 61 67 69 66 64 67 66 65 65 68 67
RH 46 64 87 90 44 62 84 87 48 74 93 97 61 76 93100 59 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL FW FW CL SC SC FW FW B1 B1 SC SC SC SC SC SC B1
POP 12HR 0 0 20 5 50 20 20 10 40
RAIN SHWRS IS SC IS IS IS SC
TSTMS 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