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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 PM EDT Mon Sep 21 2026
VAZ012-220800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
631 PM EDT Mon Sep 21 2026
Date 09/21/26 Tue 09/22/26 Wed 09/23/26 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 61 71 54 60 50
TEMP 69 66 64 64 63 67 70 67 63 60 58 56 55 57 58 58 57 54 52 52 51
DEWPT 65 64 63 62 63 66 67 66 63 60 57 56 55 57 58 58 57 54 52 51 51
MIN/MAX RH 100 91 99 97 100
RH 87 93 97 93100 97 90 97100100 96100100100100100100100100 96100
WIND DIR SE E E W SE SE E E E E E E E E E E E E E E E
WIND SPD 1 1 1 1 1 1 1 1 2 3 4 4 4 3 3 3 4 4 4 3 3
WIND GUST 14
CLOUDS SC B1 B2 B2 B2 OV OV OV OV OV B2 B2 B2 OV B2 OV B2 B2 B2 B2 B2
CLOUDS(%) 46 63 80 77 80 89 91 93 94 95 82 82 81 88 87 88 87 87 85 79 78
VSBY 10 8 2 1 2 8 8 5 4 6 6 5 3 3 6 6 10
POP 12HR 60 90 80 70 70
RAIN D L C L L L C C L L C C
RAIN SHWRS IS IS SC NM SC SC NM O
TSTMS IS IS IS IS IS IS SC SC
Obvis PF
MIX HGT <1 <1 <1 <1 <1 1 2 1 <1 <1 1 1 1 1 2 2 1
T WIND DIR S E SE SE E S SW E E E E E E E E E E
T WIND SPD 5 3 9 4 2 5 2 1 10 11 10 6 9 8 10 12 11
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 3 2 4 2 2 9 5 1 5 5 7 5 13 15 22 28 8
MAX LVORI 6 8 6 6 10 6 6 7 9 9 8 9 5 5 5 4 8
STABILITY F F F F C C C C F F E E D C C C E
CEILING 1700 100 100 100 200 200 300 300 300
STA PRES 27.28 27.31 27.34 27.33 27.37 27.38 27.43 27.43
Date 09/24Fri 09/25/26Sat 09/26/26Sun 09/27/26Mon 09/28/26
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 61 45 68 41 69 41 71 44 73
TEMP 58 55 48 47 64 57 46 42 64 56 45 44 67 57 47 45 69 60
DEWPT 58 55 48 47 52 50 44 42 47 47 43 43 49 50 45 45 54 56
RH 100100100100 65 77 93100 54 72 93 96 52 77 93100 59 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 B1 SC SC FW FW FW FW FW FW SC SC SC FW SC SC
POP 12HR 10 0 5 0 5 0 5 0 5
$$
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