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 Sun Jul 19 2026

NCZ003-200800-
RAWS 310301
36.48N  80.86W Elev. 1300 ft
801 PM EDT Sun Jul 19 2026

Date           07/19/26      Mon 07/20/26            Tue 07/21/26            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                 67          83          67          87          69
TEMP                75 71 69 70 77 81 81 77 72 70 69 71 80 84 86 81 75 72 70 72
DEWPT               70 69 68 69 72 73 73 73 71 70 69 71 75 75 74 74 72 70 69 71
MIN/MAX RH                  100          73         100          70          98
RH                  84 93 97 97 85 77 77 87 97100100100 85 74 68 79 90 93 97 97
WIND DIR            NW  N  N  N SE  S  S  N  N  N  N SW SW SW SW SW SW SW SW SW
WIND SPD             3  0  0  0  1  4  3  0  0  0  0  1  4  6  6  4  3  2  2  4
WIND GUST                                                        14            
CLOUDS              B1 SC B1 B1 B2 B2 B2 B2 B2 B2 B2 B1 B1 B2 B2 B1 B2 B2 B2 B2
CLOUDS(%)           55 47 65 55 73 73 78 86 73 74 78 60 66 82 82 59 70 73 73 87
VSBY                10 10  7  7 10 10 10 10  8  8  7  5 10 10 10 10            
POP 12HR                     10          60          60          70          60
RAIN SHWRS                      IS NM NM NM NM    IS SC SC NM NM SC SC NM NM  O
TSTMS                              SC SC SC IS    IS    SC NM SC SC SC IS IS IS
MIX HGT             <1 <1 <1 <1  3  3  3 <1 <1 <1 <1 <1  3  3  2 <1            
T WIND DIR           N  N  N  N  S SW  S  S SE  S SW SW  W  W SW  S            
T WIND SPD          11  9  5  4  2  5  5  6  4  3  3  4 11 11  9  6            
DISPERSION          VP VP VP             VP VP VP VP             VP VP VP VP   
ADI                  5  4  3  5  7 19 19  3  2  2  2  5 34 46 23  5            
MAX LVORI            6  6  8  7  4  3  3  6  8 10 10  9  4  3  3  4            
STABILITY            G  F  F  B  B  C  B  F  F  F  F  B  C  B  C  E            
CEILING              None  4000  3700  2800  2800   500  2400  5400  3600      
STA PRES            28.06 28.08 28.11 28.07 28.07 28.06 28.08 28.05            


Date           07/22Thu 07/23/26Fri 07/24/26Sat 07/25/26Sun 07/26/26
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      62      79      61      79      63      79      64      83
TEMP          82 80 68 65 76 74 64 65 77 74 67 67 76 75 67 68 81 77
DEWPT         73 71 64 63 66 67 61 63 66 67 63 65 69 70 65 67 70 71
RH            74 74 87 93 71 79 90 93 69 79 87 93 79 84 93 97 69 82
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 OV B1 B1 SC SC B1 B1 B1 B1 B1 B1 B2 B2 B1 B1 SC B1
POP 12HR           80      40      20      30      40      40      60      30      30
RAIN SHWRS     O  O SC SC IS IS SC IS    SC SC SC SC NM SC IS IS SC
TSTMS         SC NM IS       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