National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 PM EDT Tue Jul 28 2026

VAZ046-290800-
RAWS 441101
37.39N  78.80W Elev. 804 ft
901 PM EDT Tue Jul 28 2026

Date           07/28/26      Wed 07/29/26            Thu 07/30/26            Fri
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                 67          86          63          86          64
TEMP                73 71 68 69 79 85 85 78 71 67 64 67 78 84 85 80 71 67 64 68
DEWPT               70 67 65 67 66 65 64 63 62 61 60 62 62 63 63 63 63 61 60 63
MIN/MAX RH                   92          48          88          46          88
RH                  90 87 90 93 64 51 50 60 73 81 87 84 58 49 48 56 76 81 87 84
WIND DIR             W NW  W NW NW NW NW NW NW NW  W  W NW NW  N NE  N NW NW  N
WIND SPD             5  3  5  5  6  6  9  8  5  4  4  4  5  5  5  2  3  2  3  2
CLOUDS              FW CL CL CL CL SC SC SC CL CL CL CL CL FW FW SC SC FW FW FW
CLOUDS(%)           16  3  5  4  2 28 37 29  2  1  4  3  3 20 23 29 39 16  9 15
VSBY                10 10  8 10 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                     10           0           0           0           0
MIX HGT             <1 <1 <1 <1  4  6  6 <1 <1 <1 <1 <1  5  7  7 <1            
T WIND DIR           W  W NW NW  N NW NW NW NW NW  W NW  N NW NW NW            
T WIND SPD           8  8  6  9 11 10 14 12  5  4  3  9  5  8 10  2            
DISPERSION          PR VP PR             PR PR VP VP             VP VP VP VP   
ADI                  4  4  3  9 56 69104  8  3  2  2  9 34 66 89  1            
MAX LVORI            8  8  8  6  1  1  1  2  3  5  6  4  1  1  1  3            
STABILITY            F  F  F  A  B  B  B  E  F  F  F  A  A  A  A  G            
CEILING                    None  None  None  None  None  None  None  None      
STA PRES                  28.97 29.04 29.05 29.13 29.17 29.20 29.17            


Date           07/31Sat 08/01/26Sun 08/02/26Mon 08/03/26Tue 08/04/26
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       87      67      86      69      83      70      82      69      85
TEMP          85 82 70 70 85 79 71 71 82 77 71 71 80 76 70 71 83 78
DEWPT         64 65 66 67 67 68 69 70 72 72 71 71 74 74 70 71 74 73
RH            50 56 87 90 55 69 93 97 72 85100100 82 94100100 74 85
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW SC B1 B2 B1 B2 OV B2 B2 B2 B2 B1 B1 B1 SC B1
POP 12HR            5       0      10      20      50      50      50      40      40
RAIN SHWRS                      IS IS SC SC SC IS SC SC SC IS IS SC
TSTMS                           IS       SC IS       SC 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