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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 AM EDT Mon Sep 14 2026
VAZ024-142000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
931 AM EDT Mon Sep 14 2026
Date Mon 09/14/26 Tue 09/15/26 Wed 09/16/26
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 88 55 84 55 90
TEMP 80 86 86 73 65 60 56 56 72 81 82 70 64 59 56 58 79 89 87 75
DEWPT 67 63 59 60 56 52 50 51 54 59 61 61 59 58 56 56 62 65 65 65
MAX/MIN RH 40 82 45 100 44
RH 65 46 40 64 73 75 80 83 53 47 49 73 84 96100 93 56 45 48 71
WIND DIR N N N NE NE NE N N SE SE SE SE N N N N N SE SE SE
WIND SPD 3 3 3 3 2 1 0 0 2 3 3 1 0 0 0 0 0 2 3 1
CLOUDS FW FW FW FW SC FW FW FW SC FW FW SC FW CL CL CL CL FW FW FW
CLOUDS(%) 14 10 11 23 26 11 19 18 38 25 15 31 7 3 2 3 3 7 12 15
VSBY 9 10 10 10 10 7 7 10 6 10 7 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 4 6 5 <1 <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR N N N NE NE E E E SE S SE SE SE NW N N W E SE SE
T WIND SPD 11 9 6 4 5 4 3 3 4 2 3 2 1 2 2 1 3 3 3 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 53 60 38 2 3 2 2 3 17 10 15 1 1 1 1 1 10 16 16 2
MAX LVORI 1 1 1 3 3 3 5 5 2 2 2 3 6 8 10 7 2 2 2 3
STABILITY B B B G G G G A B B B G G G G A A B B G
CEILING None None None None None None None None None
STA PRES 28.60 28.69 28.76 28.83 28.78 28.81 28.82 28.84 28.79
Date Thu 09/17/26Fri 09/18/26Sat 09/19/26Sun 09/20/26
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 60 92 64 93 64 88 64 87
TEMP 64 63 91 80 68 66 91 79 69 65 86 78 68 65 85 76
DEWPT 62 60 66 66 63 63 69 69 66 64 68 66 65 65 69 68
RH 93 90 44 62 84 90 49 72 90 97 55 67 90100 59 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL FW FW SC FW FW B1 B1 SC SC SC SC SC SC B1
POP 12HR 0 10 5 40 30 20 10 40
RAIN SHWRS SC SC IS SC
TSTMS 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