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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Thu Jul 16 2026
VAZ024-170800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
131 AM EDT Thu Jul 16 2026
Date 07/15/26 Thu 07/16/26 Fri 07/17/26 Sat
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 69 97 73 95 71
TEMP 71 70 73 91 97 98 89 79 76 73 76 89 94 95 86 77 74 71 75
DEWPT 67 66 67 68 67 65 68 68 68 67 66 66 65 65 68 70 70 70 71
MIN/MAX RH 90 34 81 37 95
RH 87 87 81 47 38 34 50 69 76 81 71 47 39 37 55 79 87 97 87
WIND DIR N NW NW N SW SW SW W NW NW N NE SE SE E N N N N
WIND SPD 0 1 1 1 1 2 1 1 1 1 1 1 3 3 1 0 0 0 0
CLOUDS SC CL FW FW SC FW SC FW FW FW SC SC SC SC B1 B1 B1 B1 SC
CLOUDS(%) 31 2 18 21 42 21 32 13 15 25 39 37 40 26 55 65 56 52 45
VSBY 10 8 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 0 10 30
RAIN SHWRS SC SC
TSTMS SC SC
Obvis H H H
MIX HGT <1 <1 <1 3 6 5 <1 <1 <1 <1 <1 3 6 7 <1
T WIND DIR NW NW NW NE S W W NW NW NW N NE NE SE E
T WIND SPD 3 4 3 2 3 3 3 2 4 3 4 6 2 3 4
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 2 3 9 25 23 2 1 2 2 4 28 16 28 2
MAX LVORI 4 6 5 2 2 2 2 3 4 5 3 2 2 2 2
STABILITY G G A A A A G G G G A A A A G
CEILING None None None None None None None 4200
STA PRES 28.51 28.54 28.48 28.49 28.54 28.58 28.52
Date 07/18Sun 07/19/26Mon 07/20/26Tue 07/21/26Wed 07/22/26
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 94 70 93 65 90 66 93 67 91
TEMP 94 83 73 73 90 83 68 69 88 83 69 70 90 84 70 70 88 82
DEWPT 72 73 71 72 70 69 67 65 66 66 66 67 69 69 68 68 67 66
RH 49 72 93 97 52 63 97 87 48 57 90 90 50 61 93 93 50 58
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B2 B1 B1 B1 B1 SC SC SC SC SC SC B1 B1 B1 SC SC B1
POP 12HR 60 20 40 20 20 20 40 40 30
RAIN SHWRS NM IS SC IS IS IS IS SC SC IS IS SC
TSTMS SC IS SC IS SC IS 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
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