National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Thu Jul 23 2026

NCZ003-232000-
RAWS 310301
36.48N  80.86W Elev. 1300 ft
331 AM EDT Thu Jul 23 2026

Date             Thu 07/23/26            Fri 07/24/26            Sat 07/25/26
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                 71          64          70          64          77
TEMP          70 69 70 71 69 67 66 65 64 65 66 68 70 70 67 66 64 66 70 73 76 73
DEWPT         67 67 64 63 63 64 63 61 61 62 63 64 65 69 67 65 64 66 70 70 71 70
MAX/MIN RH                   75          92          84         100          85
RH            90 93 81 76 81 90 90 87 90 90 90 87 84 97100 97100100100 90 85 90
WIND DIR       N NE  E  E  E  E  N  N  N NE  E  E  E  E  N  N  N  N  N SE SE  N
WIND SPD       1  2  3  4  4  2  0  0  0  1  2  3  3  1  0  0  0  0  0  2  2  0
CLOUDS        B2 B2 B2 B2 B1 B1 OV OV B2 B1 OV B2 B2 B2 OV OV B2 B2 B2 B2 B2 B1
CLOUDS(%)     72 77 81 75 62 65 92 90 80 66 88 82 76 78 88 91 87 80 82 76 76 63
VSBY           5  6  8 10  9  8  7  8  7  7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                     50          40          50          70          70
RAIN SHWRS    SC SC    SC SC SC    IS SC IS SC SC    NM NM NM NM NM NM NM NM SC
TSTMS         IS       SC IS                   IS                      SC SC IS
MIX HGT       <1 <1  2  2  2 <1 <1 <1 <1 <1  2  2  2  1 <1 <1 <1 <1 <1  2  1  1
T WIND DIR     N NE  E NE  E  E NE NE NE NE NE NE NE  E NE  E NE  E NE NE  S SW
T WIND SPD    11  9 12 12  8  6  6  6  9  9  8 11  6  5  6  5  5  3  2  1  6  1
DISPERSION    VP             VP VP VP VP             VP VP VP VP             VP
ADI            5 12 27 33 22  3  3  3  4 10 18 30 18  3  3  3  3  4  3  3 13  1
MAX LVORI      6  5  3  3  3  6  6  6  5  5  4  4  4  6  9  9  9  9  9  6  4  8
STABILITY      F  B  B  C  C  F  F  F  F  B  B  B  B  F  F  F  F  B  B  B  B  F
CEILING              2000  2100   600   600   600   900   600   600   600  1300
STA PRES            28.22 28.22 28.24 28.21 28.24 28.21 28.21 28.19 28.19 28.13


Date          Sun 07/26/26Mon 07/27/26Tue 07/28/26Wed 07/29/26
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       62      84      63      86      66      88      67      85
TEMP          65 66 80 77 67 67 84 80 69 71 85 81 71 70 83 79
DEWPT         65 66 70 71 66 67 69 72 67 68 72 72 68 68 70 70
RH           100100 72 82 97100 61 77 93 90 65 74 90 93 65 74
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B1 B1 B1 B1 FW SC SC FW SC B1 SC SC B1 SC SC B1
POP 12HR           30      40      10       5      10      30      30      30
RAIN SHWRS    SC IS SC SC                      SC SC       SC
TSTMS         IS    IS SC                      SC 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