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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1201 PM EDT Thu Jul 16 2026
VAZ046-162000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1201 PM EDT Thu Jul 16 2026
Date Thu 07/16/26 Fri 07/17/26 Sat 07/18/26
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 94 74 94 72 94
TEMP 92 94 88 80 77 76 77 87 94 94 86 79 75 73 76 89 94 92 85
DEWPT 70 68 68 67 67 67 63 65 65 65 68 70 70 70 72 72 72 72 72
MAX/MIN RH 42 73 38 93 49
RH 49 43 52 65 71 74 62 48 39 39 55 74 84 90 87 57 49 52 65
WIND DIR SE S SW W N NE NE NE NE E E E E E S SW SW SW SW
WIND SPD 3 3 2 2 2 6 8 6 5 4 2 3 2 1 2 6 11 11 6
CLOUDS SC SC SC FW FW FW SC FW SC FW B1 B1 B1 SC SC SC B2 B2 B1
CLOUDS(%) 26 34 31 17 17 19 33 15 42 24 68 56 57 47 40 40 73 73 67
VSBY 10 10 10 10 10 10 10
POP 12HR 0 0 5 20 50
RAIN SHWRS IS IS NM NM SC
TSTMS IS IS SC SC SC
Obvis H H H H
MIX HGT 6 7 <1 <1 <1 <1 1 3 5 6 <1 <1 <1 <1 <1 4 8 5 1
T WIND DIR N SW W W NW NE NE E E S E SE S S SW W W SW SW
T WIND SPD 0 3 6 3 2 6 16 9 3 3 6 10 5 3 8 17 18 18 13
DISPERSION VP VP VP PR VP VP VP VP PR
ADI 0 27 3 2 1 3 24 30 23 26 3 5 3 2 10 82 66 54 9
MAX LVORI 2 2 2 3 3 3 2 2 2 2 2 3 5 7 5 1 1 1 3
STABILITY A A G G G F B B A A F F F F A B D D E
CEILING None None None None None 4700 None None 4700
STA PRES 29.23 29.26 29.31 29.35 29.28 29.28 29.25 29.22 29.13
Date Sun 07/19/26Mon 07/20/26Tue 07/21/26Wed 07/22/26
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 72 92 67 89 68 90 69 90
TEMP 75 75 90 83 71 70 87 82 71 71 87 82 72 72 87 83
DEWPT 72 72 73 71 68 66 68 67 68 69 71 70 68 69 69 68
RH 90 90 58 67 90 87 53 61 90 93 59 67 87 90 55 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC B1 B2 SC FW SC SC SC SC B1 B1 B1 SC SC SC
POP 12HR 40 60 20 20 20 40 40 20
RAIN SHWRS SC IS NM IS IS IS IS SC SC IS IS
TSTMS SC SC IS IS SC SC IS
$$
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