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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Sep 26 2026
NCZ001-270800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
801 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 44 61 46 63 47
TEMP 52 49 47 46 54 59 60 55 52 50 48 49 56 61 62 56 53 51 49 50
DEWPT 43 43 42 42 43 39 40 41 44 40 38 35 41 47 48 48 48 46 46 46
MIN/MAX RH 89 47 74 56 93
RH 71 80 83 86 66 47 47 59 74 68 68 58 57 60 60 74 83 83 89 86
WIND DIR N N NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 12 11 11 14 14 16 16 17 17 17 18 18 11 6 8 6 6 5 3 2
CLOUDS FW FW FW FW FW CL FW FW FW FW FW FW FW FW FW FW FW CL FW FW
CLOUDS(%) 7 11 11 9 14 5 6 17 12 11 17 14 9 17 16 14 13 5 10 9
VSBY 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 <1 <1 2 2 3 1 <1 <1 <1 <1 2 3 4 <1
T WIND DIR N N NW NW NW NW NW NW NW NW NW NW NW NW NW NW
T WIND SPD 12 11 13 12 17 21 23 14 14 12 11 12 14 13 12 8
DISPERSION FR FR FR GD GD GD GD PR PR PR VP
ADI 8 8 9 14 29 47 50 13 13 11 10 14 34 54 54 4
MAX LVORI 5 5 5 5 3 1 1 3 4 3 3 3 1 1 1 5
STABILITY E E E D D D D D D D D D C B B F
CEILING None None None None None None None None None
STA PRES 26.67 26.64 26.63 26.61 26.62 26.62 26.67 26.66
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 69 51 71 55 71 58 70 59 67
TEMP 66 60 53 52 68 61 57 56 68 63 60 58 67 63 61 59 64 62
DEWPT 48 53 51 48 51 54 53 53 58 59 58 57 60 61 60 58 62 60
RH 52 78 93 86 54 78 86 90 70 87 93 96 78 93 97 96 93 93
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL FW CL FW SC SC SC SC SC SC SC SC B1 B1 B1 B1 B2
POP 12HR 0 0 0 0 5 10 20 30 60
RAIN SHWRS IS SC IS SC NM
$$
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