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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
242 AM EDT Sat Sep 26 2026
NCZ006-270800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
242 AM EDT Sat Sep 26 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 46 79 52 79 56
TEMP 49 49 67 75 78 67 59 56 54 53 68 75 75 67 62 59 57 57
DEWPT 41 42 47 45 47 48 48 48 48 48 51 51 52 51 51 51 51 51
MIN/MAX RH 78 33 82 40 82
RH 74 77 49 34 33 50 67 74 80 83 54 43 45 56 67 75 80 80
WIND DIR NW NW N N N N NW NW W W NW NW NW NW NW W W W
WIND SPD 4 5 8 8 6 2 2 2 3 4 6 8 8 5 2 1 2 2
CLOUDS CL CL CL CL CL CL CL FW FW FW FW FW FW FW FW FW FW FW
CLOUDS(%) 1 0 1 4 4 3 4 24 18 14 7 6 22 17 24 17 19 14
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 2 5 6 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1
T WIND DIR NW NW N N N NW NW NW NW W NW NW NW NW NW NW W W
T WIND SPD 8 6 16 16 16 4 8 8 6 5 12 12 13 5 6 5 5 5
DISPERSION VP VP VP VP VP PR VP VP VP
ADI 4 7 46 93107 2 4 4 3 6 46 70 83 3 3 3 3 6
MAX LVORI 3 4 1 1 1 2 3 4 5 4 1 1 1 3 3 3 4 4
STABILITY F B B B B G G G G B B B B F G G G B
CEILING None None None None None None None None None
STA PRES 29.34 29.32 29.25 29.29 29.26 29.23 29.19 29.24 29.26
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 81 57 84 58 86 61 87 65 88
TEMP 76 71 61 58 80 72 61 59 83 75 64 62 85 77 68 66 85 77
DEWPT 57 60 58 57 60 61 59 58 60 61 60 61 63 64 64 65 66 67
RH 52 68 90 96 51 68 93 96 46 62 87 97 48 64 87 97 53 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC FW FW FW FW CL FW FW SC SC SC SC SC SC SC SC
POP 12HR 0 0 0 0 0 0 20 20 20
RAIN SHWRS IS 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