National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
308 AM EDT Sun Jul 19 2026

VAZ018-192000-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
308 AM EDT Sun Jul 19 2026

Date             Sun 07/19/26            Mon 07/20/26            Tue 07/21/26
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                 86          65          84          68          87
TEMP          72 73 79 83 83 76 70 68 67 68 77 81 81 74 71 70 70 71 78 82 82 75
DEWPT         69 69 71 71 69 68 65 64 64 65 68 68 69 69 68 67 67 69 72 72 72 71
MAX/MIN RH                   64          91          64          93          71
RH            90 87 77 67 63 76 84 87 90 90 74 65 67 84 90 90 90 93 82 72 72 87
WIND DIR       W NW  W NW NW NW  N  N NE  E SE  S SE SE  S  S SW SW  W SW SW SW
WIND SPD       6  6  5  5  5  3  2  2  1  1  2  3  4  3  2  2  2  3  5  6  8  6
WIND GUST     21 19 16                                              16 18 19 17
CLOUDS        B2 B2 B1 B1 B1 SC FW SC B1 B1 SC SC SC B1 B1 B2 B2 B2 B1 B2 B2 B2
CLOUDS(%)     75 77 60 64 53 34  7 41 57 69 34 36 31 60 62 71 73 75 67 80 80 83
VSBY          10  6 10 10 10 10 10  6  3  3 10 10 10 10  5  3  3 10 10 10 10 10
POP 12HR                     30          10          40          40          70
RAIN SHWRS             SC                            SC SC IS IS SC SC NM NM NM
TSTMS                  SC                            SC IS          IS SC SC SC
MIX HGT       <1  1  3  4  3 <1 <1 <1 <1 <1  3  4  3  1 <1 <1 <1  1  3  5  3 <1
T WIND DIR     W NW NW NW  W NW NW NW NE  E SE SE SE SE SE  S  S SW SW SW SW SW
T WIND SPD    12 19 17 13  9 10  3  3  1  5  8  8  9  8  3  3  1 12 24 17 18 14
DISPERSION    PR             VP VP VP VP             VP VP VP VP             PR
ADI            8 34 54 52 32  5  2  2  1  7 32 44 31  4  2  2  1 17 83 93 58 10
MAX LVORI      5  4  3  1  1  4  5  6  7  5  3  1  3  5  7  7  7  5  3  3  3  5
STABILITY      E  C  C  C  C  G  G  F  F  B  A  A  A  G  F  F  F  B  C  B  C  E
CEILING              1200  None  None  2100  None  None   700   600  1100  5100
STA PRES            27.74 27.71 27.76 27.77 27.80 27.75 27.73 27.70 27.69 27.65


Date          Wed 07/22/26Thu 07/23/26Fri 07/24/26Sat 07/25/26
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       69      84      61      79      60      80      63      81
TEMP          72 71 81 74 65 63 77 71 62 63 78 72 66 65 80 73
DEWPT         69 69 67 65 60 59 61 61 57 58 63 63 59 61 66 66
RH            90 93 63 74 84 87 58 71 84 84 60 73 78 87 62 79
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B1 B1 FW SC SC FW FW SC SC B1 SC B1 B1 B1
POP 12HR           70      30      20      20      10      20      20      30
RAIN SHWRS    NM NM SC SC    IS IS             IS IS IS    SC
TSTMS         SC    IS 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