National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

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

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

Date           09/28/26      Tue 09/29/26            Wed 09/30/26            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                 59          80          59          86          60
TEMP                66 63 61 61 74 78 78 68 63 61 59 60 77 84 85 74 66 63 61 61
DEWPT               59 59 59 59 61 59 58 60 62 61 59 60 64 61 56 60 59 60 58 58
MIN/MAX RH                   99          48         100          37          94
RH                  78 87 93 93 64 52 50 76 97100100100 64 46 37 62 78 90 90 90
WIND DIR            NE NE  N  N NE  E  E  E  E  N  N  N  S SW  S  S  S SW SW SW
WIND SPD             2  2  2  2  2  2  2  2  1  0  1  1  3  5  5  2  3  3  4  5
CLOUDS              B2 OV OV B1 B1 B1 SC SC FW FW FW FW CL FW FW FW FW FW FW FW
CLOUDS(%)           84 92 88 54 65 65 48 32 23 19 13 24  4 21 19 21 25 25 14 18
VSBY                10 10  4  7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10   
POP 12HR                      5           0           0           0           0
Obvis                     PF                                                   
MIX HGT             <1 <1 <1 <1  3  5  4 <1 <1 <1 <1 <1  3  5  6 <1            
T WIND DIR          NE  N  N NE  N NW  N  E  E NE  N  N  W SW SW  S            
T WIND SPD           4  2  2  2  1  2  0  2  2  1  2  0  5  5  5  2            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP VP   
ADI                  2  1  1  2  4  9  0  1  1  1  1  0 22 36 39  1            
MAX LVORI            5  6  7  8  3  2  2  4  8 10 10 10  3  1  1  3            
STABILITY            F  F  F  B  B  C  B  G  G  G  G  A  B  B  B  G            
CEILING              3400  3400  2700  None  None  None  None  None  None      
STA PRES            29.31 29.33 29.38 29.35 29.39 29.41 29.45 29.39            


Date           10/01Fri 10/02/26Sat 10/03/26Sun 10/04/26Mon 10/05/26
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       90      63      91      65      80      63      74      56      70
TEMP          88 77 66 64 89 80 68 65 77 71 63 63 74 67 60 57 69 62
DEWPT         59 60 60 60 62 63 63 62 63 63 63 63 66 65 60 57 57 55
RH            38 56 81 87 41 56 84 90 62 76100100 76 93100100 66 78
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW FW SC SC B1 B1 B1 B1 B1 B1 B2 B1 B1 B1 B1
POP 12HR            0       0       5      20      20      40      50      30      30
RAIN SHWRS                      IS IS    IS SC SC SC SC SC SC SC 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