National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
902 AM EDT Sat Aug 2 2025

NCZ018-022000-
RAWS 311941
36.22N  81.63W Elev. 3254 ft
902 AM EDT Sat Aug 2 2025

Date             Sat 08/02/25            Sun 08/03/25            Mon 08/04/25
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 62          57          66          54          71
TEMP                61 61 62 61 60 59 58 57 59 62 62 60 57 56 55 57 63 67 67 64
DEWPT               60 61 60 59 60 59 57 56 56 56 55 54 54 53 52 54 56 58 58 56
MAX/MIN RH                   92          99          79          91          71
RH                  97100 93 93100100 96 96 90 81 78 81 90 90 90 90 78 73 73 75
WIND DIR             E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E SE SE SE
WIND SPD             9  8  8  5  5  5  6  9 10  8  6  4  2  2  2  2  5  6  5  3
WIND GUST                          16 18                                       
CLOUDS              OV B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 SC SC SC B1 B1 B1 B1
CLOUDS(%)           88 83 81 75 80 82 75 71 74 78 73 64 52 43 47 41 51 62 69 64
VSBY                 2  1  5  3  2  1  1  6  6  6  6  7  7  7  7  7  7  7  7  7
POP 12HR                     40          60          50          30          30
DRIZZLE                                                                        
RAIN SHWRS          SC SC SC NM SC SC SC SC SC SC SC SC SC SC IS IS IS IS SC SC
TSTMS                        IS             IS IS IS                   IS SC   
Obvis                           PF PF                                          
MIX HGT              1  1  1  1 <1 <1 <1  1  2  2  2 <1 <1 <1 <1 <1  2  3  2 <1
T WIND DIR           E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E  E SE
T WIND SPD          12 14 13 11  5  8 13 14 11  8  8  6  4  5 11  9  4  3  4  9
DISPERSION                   PR PR PR PR             VP VP VP VP             VP
ADI                 20 28 26  8  4  5  9 23 27 22 21  5  2  3  5  9 11 10 12  4
MAX LVORI            5  4  4  6  8  9  8  5  4  3  3  4  6  6  6  5  4  3  3  4
STABILITY            C  C  C  E  E  E  E  C  C  C  C  E  F  F  F  A  C  C  C  F
CEILING                     300  2700   300   300  3500  None  None  None   600
STA PRES                  27.05 27.04 27.03 27.03 27.00 27.01 27.03 27.05 27.04


Date          Tue 08/05/25Wed 08/06/25Thu 08/07/25Fri 08/08/25
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       57      69      59      69      59      72      60      75
TEMP          59 59 66 64 60 60 66 63 61 61 69 65 61 62 70 67
DEWPT         54 56 61 60 58 58 63 61 59 60 64 62 61 61 65 63
RH            83 90 84 87 93 93 90 93 93 97 84 90100 97 84 87
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 B1 B2 B2 B1 B2 B2 B2 B1 B1 B2 B1 B1 B1 B1
POP 12HR           40      60      60      60      50      60      30      50
RAIN SHWRS    SC SC SC NM NM SC NM NM SC SC SC NM SC IS SC SC
TSTMS               IS SC IS    IS NM 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