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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri Sep 11 2026
VAZ024-120800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
401 PM EDT Fri Sep 11 2026
Date 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon
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 67 83 67 88 64
TEMP 79 71 68 67 67 68 75 82 82 74 70 70 69 68 78 87 88 79 70 67 66 65
DEWPT 73 71 68 67 66 68 74 74 74 73 70 70 69 68 73 72 71 71 69 67 66 65
MIN/MAX RH 100 75 100 57 100
RH 82100100100 97100 97 77 77 97100100100100 85 61 57 77 97100100100
WIND DIR E E E N N N E SE SE SE N N N W NW NW NW W NW W NW NW
WIND SPD 3 2 1 0 0 0 1 3 3 1 0 0 0 1 2 2 2 1 1 1 1 1
CLOUDS B2 B1 B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B1 SC SC SC SC SC FW FW FW FW
CLOUDS(%) 78 57 83 74 76 71 87 74 83 84 90 86 63 35 39 38 38 31 21 18 13 22
VSBY 5 7 7 2 0 0 5 10 10 9 4 1 1 3 10 7 7 10 10 10 10
POP 12HR 40 80 70 20 0
RAIN SHWRS NM SC IS IS SC SC NM SC SC IS IS
TSTMS SC IS IS SC IS IS IS IS
Obvis PF PF PF PF PF PF PF PF
MIX HGT 3 <1 <1 <1 <1 <1 1 2 2 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR SE E E E E E SE SE SE SE SE S SW W NW NW NW W
T WIND SPD 9 9 11 8 8 9 8 4 4 4 4 4 3 5 10 11 8 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 30 4 5 4 4 7 15 13 11 2 2 2 2 6 33 64 32 2
MAX LVORI 3 9 9 9 8 8 5 4 4 9 9 9 10 9 4 1 1 4
STABILITY C F F F F C C C C F F F F A B B B G
CEILING 3500 900 300 1600 1600 200 None None None
STA PRES 28.54 28.56 28.59 28.55 28.54 28.52 28.53 28.47
Date 09/14Tue 09/15/26Wed 09/16/26Thu 09/17/26Fri 09/18/26
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 87 56 79 57 85 61 89 66 83
TEMP 84 76 62 57 75 69 59 58 83 74 64 63 88 78 68 67 81 72
DEWPT 66 64 60 57 62 62 59 58 66 66 63 62 68 68 65 64 67 66
RH 55 66 93100 64 78100100 57 76 97 97 52 71 90 90 63 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC FW FW FW FW FW FW FW SC SC SC SC B1
POP 12HR 10 5 0 0 5 5 20 20 50
RAIN SHWRS IS IS IS SC
TSTMS 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