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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Fri Sep 25 2026
VAZ046-260800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
231 PM EDT Fri Sep 25 2026
Date 09/25/26 Sat 09/26/26 Sun 09/27/26 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 50 75 53 73 57
TEMP 71 62 55 53 51 51 67 74 73 64 59 56 53 55 67 72 71 65 62 59 58 58
DEWPT 43 43 41 42 43 44 48 48 49 49 50 50 49 49 52 53 54 55 55 54 54 55
MIN/MAX RH 76 39 84 51 91
RH 36 50 59 66 74 77 50 40 43 58 72 80 86 80 59 51 55 70 78 83 86 90
WIND DIR N N N N NW NW N N N N N NW NW W NW NW N N NW W W W
WIND SPD 11 6 6 6 8 8 10 10 10 5 5 4 5 5 8 8 8 5 3 3 3 4
WIND GUST 20
CLOUDS FW FW CL CL CL CL FW FW FW FW SC SC SC FW SC SC B2 B2 B2 B1 B1 B1
CLOUDS(%) 12 6 1 1 4 0 12 12 16 21 36 41 28 22 35 50 75 74 71 64 67 54
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 10 10 10
SPRINKLES SC SC SC SC SC SC
MIX HGT 4 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 2 5 5 <1
T WIND DIR N N N N NW NW N N N N N N N W W NW NW N
T WIND SPD 23 8 9 9 9 8 19 26 26 26 10 12 12 10 18 19 18 13
DISPERSION PR PR PR PR PR PR VP PR PR VP VP VP
ADI 86 4 4 4 6 8 61110112 12 5 8 6 11 48107 55 9
MAX LVORI 1 2 3 3 3 4 1 1 1 2 3 4 5 4 1 1 1 3
STABILITY C F F F E B C C C F F E F B B B D E
CEILING None None None None None None None None 3900 4000
STA PRES 29.30 29.28 29.23 29.21 29.21 29.22 29.14 29.09 29.06
Date 09/28Tue 09/29/26Wed 09/30/26Thu 10/01/26Fri 10/02/26
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 74 58 80 58 83 60 83 62 83
TEMP 73 70 61 59 76 69 60 59 80 72 63 61 80 73 65 63 80 73
DEWPT 60 62 61 59 62 62 60 59 62 63 61 61 65 65 63 63 66 66
RH 64 76100100 62 78100100 54 73 93100 60 76 93100 62 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 SC SC SC FW FW FW FW SC SC SC SC SC SC B1
POP 12HR 0 0 0 0 0 0 5 10 20
RAIN SHWRS 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