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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EDT Sun Jul 12 2026
VAZ046-130800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
831 PM EDT Sun Jul 12 2026
Date 07/12/26 Mon 07/13/26 Tue 07/14/26 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 64 79 61 85 64
TEMP 70 69 67 67 72 77 78 74 68 65 63 66 77 83 85 79 68 65 64 68
DEWPT 70 69 67 67 70 69 68 67 66 65 63 65 66 64 63 66 64 63 62 65
MIN/MAX RH 100 72 100 48 93
RH 100100100100 93 76 71 79 93100100 97 69 53 48 64 87 93 93 90
WIND DIR E E NE NE E E E E E NE NE NE NE E E SE SW W SW W
WIND SPD 5 4 6 8 8 8 8 4 3 2 3 3 5 4 3 1 1 2 4 3
CLOUDS B2 B2 OV OV B2 B2 B1 B1 B1 SC B1 B1 SC SC FW CL CL CL FW FW
CLOUDS(%) 77 85 89 91 78 79 67 64 61 42 69 59 35 31 15 4 2 2 8 6
VSBY 7 7 6 7 10 10 10 10 10 10 9 10 10 7 7 7 7 7 7 7
POP 12HR 50 30 10 0 0
RAIN SHWRS SC SC SC SC IS
TSTMS
Obvis PF PF
MIX HGT <1 <1 <1 1 2 3 4 <1 <1 <1 <1 <1 3 4 5 <1
T WIND DIR E E NE NE E E E E NE E NW NW NE E E S
T WIND SPD 11 10 6 13 12 10 9 6 2 1 2 2 6 4 2 1
DISPERSION PR VP PR VP VP VP VP VP VP VP VP
ADI 8 7 5 19 33 44 32 5 1 1 1 2 28 25 14 1
MAX LVORI 8 8 9 5 4 3 3 4 7 10 10 9 3 2 2 4
STABILITY E E E C C B C E F F F A A A A G
CEILING 500 900 1700 10600 None 31000 None None None
STA PRES 29.43 29.44 29.49 29.45 29.47 29.48 29.48 29.41
Date 07/15Thu 07/16/26Fri 07/17/26Sat 07/18/26Sun 07/19/26
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 93 70 96 71 94 69 93 68 91
TEMP 91 86 72 74 94 88 74 74 91 87 73 73 91 85 72 72 89 84
DEWPT 67 68 67 68 69 71 68 67 66 68 66 67 67 68 67 68 68 68
RH 45 55 84 82 44 57 82 79 44 53 79 81 45 57 84 87 50 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL FW SC FW FW FW SC FW SC SC SC SC SC B1 B1
POP 12HR 0 0 5 5 20 20 20 20 30
RAIN SHWRS IS IS IS IS SC
TSTMS IS IS 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