National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Wed Sep 16 2026

NCZ003-170800-
RAWS 310301
36.48N  80.86W Elev. 1300 ft
731 PM EDT Wed Sep 16 2026

Date           09/16/26      Thu 09/17/26            Fri 09/18/26            Sat
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                 63          90          68          88          66
TEMP             79 70 67 65 66 86 89 85 78 72 70 69 71 84 88 85 77 72 70 68 67
DEWPT            67 65 63 62 63 68 68 71 70 69 68 67 68 71 70 71 72 70 69 68 67
MIN/MAX RH                   91          48          94          56         100
RH               67 84 87 90 90 55 50 63 76 90 93 93 90 65 55 63 85 93 97100100
WIND DIR          S  W NW NW NW  N NW  S NW NW NW NW NW  N  N  N  N  N NE NE NE
WIND SPD          2  1  1  2  2  2  3  3  2  4  1  2  3  5  4  3  2  1  1  1  2
CLOUDS           CL CL FW FW FW FW SC B1 FW SC SC FW SC SC B2 B2 B1 B1 B2 B2 B2
CLOUDS(%)         2  1  7 11 11 15 33 54 23 41 26 18 38 30 77 77 67 67 76 86 80
VSBY             10 10 10 10  9 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                      0          30          10          70          40
RAIN SHWRS                         IS IS             SC SC NM NM SC SC IS IS   
TSTMS                              IS IS                   SC SC               
MIX HGT          <1 <1 <1 <1 <1  2  4  2 <1 <1 <1 <1 <1  3  5  3 <1            
T WIND DIR        W NW NW NW NW NW NW  W  W NW NW NW NW  N NW NW NW            
T WIND SPD        2  2  3  5  5  3  3  4  4  4  5  6  6 12 13 10  8            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI               1  1  2  2  6 11 17 10  2  2  3  3  5 31 41 34  4            
MAX LVORI         4  5  7  6  6  2  2  3  5  6  6  8  6  3  1  3  5            
STABILITY         G  G  G  G  A  A  B  B  F  G  G  G  C  D  D  B  F            
CEILING              None  None  None  None  None  None  None  6200  8200      
STA PRES            4.734 28.39 28.38 28.31 28.28 28.25 28.26 28.20            


Date           09/19Sun 09/20/26Mon 09/21/26Tue 09/22/26Wed 09/23/26
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       79      64      86      64      84      63      79      62      76
TEMP          77 75 68 67 84 77 69 67 82 76 68 66 77 74 67 65 74 71
DEWPT         69 69 66 67 71 71 67 67 71 71 67 66 71 70 66 65 68 68
RH            76 82 93100 65 82 93100 69 85 97100 82 87 97100 82 90
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B1 B1 B1 B1 B2 B1 SC SC B2 B2 B2 B2 B2 B2 B2 B2 B1
POP 12HR           30      20      60      20      60      50      60      60      40
RAIN SHWRS       SC IS    IS NM IS       NM SC IS SC NM NM SC SC SC
TSTMS                        SC          SC IS       SC          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