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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon Sep 14 2026
VAZ024-150800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Mon Sep 14 2026
Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu
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 56 80 56 89 59
TEMP 66 61 58 57 70 78 80 69 64 60 57 58 76 88 87 77 68 63 59 61
DEWPT 56 52 50 50 53 58 59 60 58 57 55 55 61 63 63 63 62 60 58 58
MIN/MAX RH 77 48 94 42 95
RH 70 72 75 77 55 50 49 73 81 90 93 90 60 43 45 62 81 90 96 90
WIND DIR NE N W N SE SE SE SE N N N N N SE SE SE N N N N
WIND SPD 4 3 2 0 2 3 3 1 0 0 0 0 0 2 3 1 0 0 0 0
CLOUDS FW SC SC FW SC SC FW SC SC FW FW FW CL CL CL FW FW CL CL CL
CLOUDS(%) 10 34 33 18 29 35 6 38 39 18 9 6 2 4 4 7 7 3 4 4
VSBY 10 8 8 8 8 10 7 10 10 10 8 0 10 10 10 10 10 10 10 0
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 2 3 4 <1
T WIND DIR E E E E S S S SE S S W W SW SE SE SE
T WIND SPD 8 11 9 5 5 4 4 4 4 3 1 1 3 3 2 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 4 5 4 6 20 21 20 2 2 2 1 1 10 15 10 2
MAX LVORI 3 3 4 4 2 2 2 3 5 7 8 7 2 2 2 3
STABILITY 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 28.72 28.78 28.85 28.81 28.84 28.84 28.86 28.81
Date 09/17Fri 09/18/26Sat 09/19/26Sun 09/20/26Mon 09/21/26
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 91 64 94 65 90 66 92 65 85
TEMP 89 79 68 66 91 80 70 66 86 78 69 67 89 80 70 66 81 74
DEWPT 64 64 60 60 68 69 66 65 68 68 67 66 69 68 66 65 68 67
RH 44 60 76 81 47 69 87 97 55 71 93 97 52 67 87 97 65 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW B1 B1 SC SC SC SC SC FW SC B1 SC SC B1
POP 12HR 5 0 40 10 20 10 30 30 50
RAIN SHWRS SC IS SC SC IS SC
TSTMS 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