National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Mon Sep 28 2026

VAZ046-290800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
231 AM EDT Mon Sep 28 2026

Date           09/27/26      Mon 09/28/26            Tue 09/29/26            Wed
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                 58          76          59          78          57
TEMP                      59 58 70 75 75 68 65 63 60 60 73 78 77 68 63 60 59 59
DEWPT                     52 52 55 57 55 60 60 60 59 59 61 60 57 61 61 60 58 59
MIN/MAX RH                   81          50          98          50         100
RH                        78 80 59 54 50 76 84 90 96 96 66 54 50 78 93100 96100
WIND DIR                   W  W NW NW  N NE  N  N  N  N NE SW  E  E  E NE  N  N
WIND SPD                   2  2  2  4  3  2  3  1  1  2  1  2  2  2  1  1  1  1
CLOUDS                    SC SC SC SC SC B2 B2 B1 SC SC SC SC SC FW FW FW FW FW
CLOUDS(%)                 27 30 33 43 39 85 85 69 41 39 39 44 36 13 19 18 21  6
VSBY                      10 10 10 10 10 10  8  4  2  3 10 10 10 10 10 10 10 10
POP 12HR                      5           5          10           5           0
MIX HGT                   <1 <1  3  5  5 <1 <1 <1 <1 <1  3  5  3 <1 <1 <1 <1 <1
T WIND DIR                NW SW NW NW NW NE NE NE  N  N  N NW NW NE NE  N  N  N
T WIND SPD                 2  2  4  5  4  8 11  6  3  3  2  2  2  1  1  1  1  1
DISPERSION                VP             VP VP VP VP             VP VP VP VP   
ADI                        1  2 18 32 24  4  5  3  2  4  9 14 10  1  1  1  1  1
MAX LVORI                  4  5  2  1  2  4  5  6  8  9  3  2  2  4  8 10 10 10
STABILITY                  G  B  B  B  B  F  F  F  F  B  A  B  B  G  G  G  G  A
CEILING                    None  None  None  2900  None  None  None  None  None
STA PRES                  29.17 29.21 29.20 29.28 29.32 29.37 29.34 29.38 29.40


Date           09/30Thu 10/01/26Fri 10/02/26Sat 10/03/26Sun 10/04/26
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       85      59      88      62      89      62      74      59      71
TEMP          83 74 62 60 86 76 65 63 86 77 65 62 74 66 60 59 71 65
DEWPT         60 59 58 57 56 58 58 58 61 62 60 56 57 58 57 57 60 62
RH            46 59 87 90 36 54 78 84 43 60 84 81 55 75 90 93 68 90
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW FW FW FW FW FW SC B1 SC B1 B1 B1 B1 B1 B2
POP 12HR            0       0       0       0      20      20      30      20      40
RAIN SHWRS                               IS IS IS SC SC 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