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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 PM EDT Sat Sep 26 2026
VAZ046-270800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
701 PM EDT Sat Sep 26 2026
Date 09/26/26 Sun 09/27/26 Mon 09/28/26 Tue
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 76 59 74 59
TEMP 69 63 60 58 58 67 73 74 69 65 62 61 61 68 72 73 68 65 63 61 62
DEWPT 49 53 53 52 52 54 48 49 50 54 54 53 54 57 57 57 59 59 58 57 58
MIN/MAX RH 84 40 83 57 91
RH 49 70 78 80 80 63 41 41 51 68 75 75 78 68 59 57 73 81 84 87 87
WIND DIR N N NW W W NW NW NW NW NW W W W NW NW NW E N N NW NW
WIND SPD 8 5 5 5 6 9 10 10 5 3 4 3 3 3 4 3 1 1 1 1 2
CLOUDS FW B1 B1 SC FW FW SC SC B1 SC B1 B1 B1 B1 B1 B1 B1 B1 SC SC FW
CLOUDS(%) 7 52 52 38 21 15 36 45 63 47 55 56 64 53 51 57 58 66 48 28 13
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 5 5 0 0
MIX HGT <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 4 5 4 <1
T WIND DIR N N W W W NW NW NW NW NW NW NW W NW NW NW NE
T WIND SPD 6 4 4 5 5 17 17 19 12 14 9 6 5 5 5 4 10
DISPERSION PR PR PR PR PR VP VP VP VP VP VP VP
ADI 3 3 3 3 6 58 73 83 8 7 6 3 4 20 17 18 5
MAX LVORI 3 4 5 5 5 1 1 1 2 3 4 5 5 3 2 2 3
STABILITY F E E F B B C C E F E F C C D C F
CEILING None None None None None None None None 3300
STA PRES 29.21 29.16 29.13 29.09 29.14 29.15 29.20 29.20
Date 09/29Wed 09/30/26Thu 10/01/26Fri 10/02/26Sat 10/03/26
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 78 59 84 61 86 64 84 65 76
TEMP 76 70 61 60 81 73 64 62 83 76 67 65 81 75 67 65 75 69
DEWPT 60 63 61 60 62 61 60 60 63 63 62 63 65 65 63 62 65 65
RH 58 78100100 53 66 87 93 51 64 84 93 58 71 87 90 71 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW FW CL FW SC SC SC SC SC SC SC SC B1 SC B1 B2
POP 12HR 0 0 0 0 0 5 10 20 50
RAIN SHWRS IS IS IS SC
$$
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