National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Mon Sep 14 2026

VAZ046-150800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
301 PM EDT Mon Sep 14 2026

Date           09/14/26      Tue 09/15/26            Wed 09/16/26            Thu
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                 57          79          57          86          60
TEMP          83 72 65 61 58 59 71 77 79 71 63 60 58 60 75 83 85 75 67 63 60 63
DEWPT         62 59 53 50 49 50 52 55 56 57 56 56 55 57 60 62 61 61 60 59 57 58
MIN/MAX RH                   75          44          92          43          91
RH            49 64 65 67 72 72 51 47 45 61 78 87 90 90 60 49 45 62 78 87 90 84
WIND DIR      NE NE NE NE  N NE  E  E SE  E  E  S  N SW  S SE  E SE  S SW SW SW
WIND SPD       9  8  6  4  4  4  4  3  3  3  2  1  0  1  3  2  3  3  2  1  1  2
WIND GUST        18 17                                                         
CLOUDS        FW FW CL FW FW FW FW SC FW SC FW FW FW FW FW CL CL CL CL CL CL CL
CLOUDS(%)     16 15  2 13 19 21 19 27 12 27 24 17 10  8  6  3  5  0  1  1  0  5
VSBY          10 10 10 10 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        5 <1 <1 <1 <1 <1  3  4  4 <1 <1 <1 <1 <1  3  4  4 <1            
T WIND DIR     N NE NE NE  E NE  E  N SE SE SE  S SW  S SW  S  S SE            
T WIND SPD    10  6 13  5 10  5  2  0  2  4  3  2  1  3  4  2  2  4            
DISPERSION       PR PR VP VP             VP VP VP VP             VP VP VP VP   
ADI           43  5  6  3  5  6  8  0 12  2  2  1  1  3 16 11 12  2            
MAX LVORI      1  3  3  3  3  3  2  2  2  3  4  6  7  6  2  2  2  3            
STABILITY      C  E  F  F  F  B  B  B  B  G  G  G  G  A  B  B  B  G            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            29.52 29.58 29.66 29.61 29.64 29.64 29.67 29.61            


Date           09/17Fri 09/18/26Sat 09/19/26Sun 09/20/26Mon 09/21/26
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       89      64      94      66      91      68      92      67      85
TEMP          86 79 68 66 91 81 70 67 87 80 71 69 90 81 71 67 82 76
DEWPT         61 60 57 58 65 67 65 64 67 67 67 67 68 68 67 66 67 67
RH            43 52 68 75 42 63 84 90 52 65 87 93 49 65 87 97 61 74
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    CL CL CL FW CL SC SC SC SC FW SC FW SC SC B1 SC SC B1
POP 12HR            0       0      20      10      10       5      20      30      40
RAIN SHWRS                   IS                      IS SC    IS SC
TSTMS                        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