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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
245 PM EDT Fri Jul 17 2026
NCZ006-180800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
245 PM EDT Fri Jul 17 2026
Date 07/17/26 Sat 07/18/26 Sun 07/19/26 Mon
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 75 94 72 92 68
TEMP 97 92 82 79 76 78 91 92 93 83 79 76 74 75 87 91 88 83 75 72 69 71
DEWPT 68 69 69 70 70 72 72 70 70 73 73 73 72 73 74 72 73 73 73 72 69 71
MIN/MAX RH 85 46 98 54 100
RH 39 47 65 74 82 82 54 49 47 72 82 90 93 94 65 54 61 72 94100100100
WIND DIR E E N S S SW SW SW SW SW SW SW SW W W W W NE N N N N
WIND SPD 3 1 0 1 1 2 5 9 9 5 2 2 2 2 4 4 3 1 0 0 0 1
CLOUDS SC SC SC B1 B1 SC FW B1 B1 B2 B1 FW SC B1 SC B2 B2 B2 B2 B1 B1 B1
CLOUDS(%) 29 38 48 58 53 26 16 65 53 72 57 19 38 56 42 73 73 82 82 52 59 55
VSBY 4 4 5 10 10 5 10 7 5 6 6 10 10 10 10 3 3 6
POP 12HR 5 40 60 60 70
RAIN SHWRS IS SC NM NM NM NM NM SC SC SC
TSTMS IS SC SC SC SC SC SC IS
Obvis K K K K
MIX HGT 7 <1 <1 <1 <1 <1 5 7 5 <1 <1 <1 <1 <1 3 6 5 <1
T WIND DIR SE S SE S S SW SW SW SW SW W SW SW W NW NW W W
T WIND SPD 6 8 3 3 5 6 17 17 19 18 3 4 3 12 16 11 11 11
DISPERSION VP VP VP VP PR VP VP VP VP VP VP VP
ADI 59 4 2 2 3 7100 80 80 12 2 2 2 16 71 77 61 5
MAX LVORI 1 2 3 3 5 4 1 1 1 3 5 6 7 5 1 1 1 3
STABILITY A G F F F A A C C E F G G B A B B F
CEILING None None None None 4500 None None None 7400 7900
STA PRES 29.34 29.35 29.33 29.33 29.23 29.22 29.23 29.25 29.21
Date 07/20Tue 07/21/26Wed 07/22/26Thu 07/23/26Fri 07/24/26
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 87 69 92 73 89 67 85 65 86
TEMP 85 82 73 72 89 87 78 75 87 83 71 69 83 80 68 68 84 81
DEWPT 73 72 72 72 74 72 72 73 73 71 67 65 65 65 65 65 66 66
RH 67 72 97100 61 61 82 94 63 67 87 87 55 60 90 90 55 60
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC SC B1 B1 SC SC B1 B2 B1 B1 SC SC FW SC FW SC
POP 12HR 50 20 20 20 60 40 10 20 20
RAIN SHWRS SC SC IS IS IS SC NM SC SC IS IS IS
TSTMS SC IS IS 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