National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Mon Jul 27 2026

VAZ012-280800-
RAWS 447502
37.01N  81.18W Elev. 2540 ft
401 PM EDT Mon Jul 27 2026

Date           07/27/26      Tue 07/28/26            Wed 07/29/26            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                 63          82          60          77          54
TEMP          85 77 67 65 65 67 73 77 80 74 67 65 62 62 70 73 76 70 62 58 55 58
DEWPT         63 65 63 63 63 66 70 70 69 67 65 63 62 62 63 61 60 59 59 57 55 57
MIN/MAX RH                   99          70         100          59         100
RH            48 67 87 93 93 97 90 79 69 79 93 93100100 78 66 58 68 90 96100 96
WIND DIR      NW  W  W  W  W  W  W  W  W NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD       1  1  1  2  3  4  5  5  5  4  4  3  3  4  5  5  5  4  3  3  3  3
WIND GUST                    14 16 17 16 16 14             16                  
CLOUDS        SC SC SC SC B1 B2 B2 B2 B2 B1 SC SC SC B1 FW FW FW CL SC FW SC FW
CLOUDS(%)     39 37 45 49 57 80 84 77 70 61 50 36 41 68 20 21 25  4 26 19 28 24
VSBY          10 10 10 10 10  5  4  6  6  7  7 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                     30          60          30           0           5
RAIN SHWRS                   SC SC NM SC SC SC                                 
TSTMS                           SC NM SC SC                                    
MIX HGT        5 <1 <1 <1 <1 <1  2  3  3 <1 <1 <1  1  2  3  4  5  1            
T WIND DIR    NW  W SW SW  W SW  W  W  W NW NW  N NW NW NW NW NW NW            
T WIND SPD     6  4  4  5 10 26 28 18 25 23  9 13 13 19 23 20 19 13            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI           45  2  2  3  5 29 68 54 73 15  6  6  6 38 95107114  6            
MAX LVORI      1  3  6  6  6  4  4  3  3  4  6  6  8  4  3  1  1  3            
STABILITY      A  G  F  F  F  C  C  C  C  E  E  G  F  C  A  A  A  F            
CEILING              None  4300   600  1000  None   600  None  None  None      
STA PRES            27.12 27.09 27.00 26.96 27.00 27.04 27.08 27.11            


Date           07/30Fri 07/31/26Sat 08/01/26Sun 08/02/26Mon 08/03/26
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       77      54      81      57      83      60      82      61      80
TEMP          73 71 58 59 77 72 60 62 78 73 64 63 76 73 64 64 76 72
DEWPT         59 59 56 58 60 62 57 60 62 63 61 63 65 65 63 64 67 66
RH            62 66 93 96 56 71 90 93 58 71 90100 69 76 97100 74 81
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW FW SC SC SC B1 B2 B1 B1 B2 B2 B1 B1 B1 B1
POP 12HR            0       0       5       5      20      30      60      30      50
RAIN SHWRS                               IS SC IS IS NM SC    SC SC
TSTMS                                    IS IS IS IS SC 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