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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Tue Sep 22 2026
VAZ012-230800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
801 PM EDT Tue Sep 22 2026
Date 09/22/26 Wed 09/23/26 Thu 09/24/26 Fri
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 55 59 48 56 40
TEMP 61 58 57 56 57 58 58 55 53 52 51 49 51 54 55 54 48 45 43 41
DEWPT 60 58 56 56 56 57 56 55 53 51 50 49 51 52 52 51 47 44 42 41
MIN/MAX RH 99 94 100 88 100
RH 97100 96100 96 96 93100100 96 96100100 93 90 90 96 96 96100
WIND DIR E E E E E E E E E E E E E E E E E E NE NE
WIND SPD 6 5 5 4 3 3 3 4 5 5 4 3 2 2 1 1 1 1 1 1
WIND GUST 16
CLOUDS OV OV B2 B2 OV OV OV OV OV OV B2 B2 OV B2 B2 B1 SC SC SC FW
CLOUDS(%) 94 88 82 81 89 93 91 89 96 92 87 82 89 82 76 56 42 41 35 17
VSBY 5 4 3 4 5 4 4 3 3 4 5 10 10 10 10 10
POP 12HR 60 70 90 30 0
RAIN C C C C C C C L D D L C C
RAIN SHWRS
TSTMS IS
MIX HGT <1 <1 <1 <1 1 1 2 <1 1 1 1 1 1 2 2 <1
T WIND DIR E E E E E E E E NE E E NE NE NE NE NE
T WIND SPD 11 10 10 10 9 9 11 14 10 13 11 9 9 12 9 8
DISPERSION PR PR PR VP PR PR VP VP VP VP VP
ADI 8 7 7 13 17 18 22 10 7 9 8 14 16 30 22 4
MAX LVORI 8 8 8 5 5 5 5 7 8 8 8 5 5 4 3 6
STABILITY E E E D C C C E E E E C C C C F
CEILING 200 200 300 300 300 200 300 300 None
STA PRES 27.38 27.41 27.45 27.44 27.44 27.41 27.43 27.41
Date 09/25Sat 09/26/26Sun 09/27/26Mon 09/28/26Tue 09/29/26
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 68 39 70 41 70 43 72 45 76
TEMP 65 56 44 41 65 56 45 43 65 56 47 45 68 59 48 47 73 63
DEWPT 44 45 40 39 44 45 42 42 48 48 45 44 52 53 47 47 56 58
RH 46 66 86 92 46 66 89 96 54 74 93 96 57 80 96100 55 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW FW FW SC SC SC SC SC SC FW FW SC
POP 12HR 0 0 0 0 0 0 0 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