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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EDT Thu Jul 16 2026
NCZ005-162000-
RAWS 310540
36.38N 79.70W Elev. 858 ft
431 AM 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 97 73 96 73 94
TEMP 69 73 90 97 97 89 81 76 74 77 89 96 95 88 81 77 74 77 90 94 92 86
DEWPT 66 68 68 66 62 66 65 65 66 68 70 67 66 67 69 70 70 72 72 72 71 72
MAX/MIN RH 33 81 37 90 48
RH 90 84 49 36 32 47 58 69 76 74 54 39 39 50 67 79 87 85 56 49 51 63
WIND DIR W NW N N NW NW W NW NW N NE NE E SE SE S SW SW SW SW SW SW
WIND SPD 2 2 3 2 2 1 1 1 2 4 6 5 3 2 2 2 1 2 5 9 10 6
CLOUDS FW CL FW FW SC FW FW FW FW FW FW SC SC B1 SC SC SC FW FW B1 B1 B2
CLOUDS(%) 9 5 9 21 34 15 18 11 12 20 23 34 37 51 47 41 30 22 22 64 64 78
VSBY 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 10 20 40
RAIN SHWRS IS IS SC SC NM
TSTMS IS IS SC SC SC
Obvis H H H H H
MIX HGT <1 <1 3 7 8 <1 <1 <1 <1 1 3 7 7 <1 <1 <1 <1 <1 5 8 6 <1
T WIND DIR W N N N W NW NW NW N NE E SE SE W SE S W SW SW SW SW SW
T WIND SPD 3 8 4 1 1 4 3 2 4 11 5 2 4 4 3 2 1 3 17 14 16 11
DISPERSION VP VP VP VP VP VP VP VP VP PR
ADI 2 8 18 9 10 2 2 1 2 18 22 18 37 2 2 1 1 4100 75 74 8
MAX LVORI 6 4 2 2 2 2 3 3 4 3 2 2 1 2 3 4 6 5 1 1 1 3
STABILITY G A A A A G G G G A B A A F F F G A A C C E
CEILING None None None None None None None None None 5100
STA PRES 29.27 29.21 29.23 29.27 29.29 29.25 29.26 29.23 29.22 29.12
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 91 68 88 69 90 70 90
TEMP 74 75 90 84 72 71 86 83 72 72 88 85 75 73 88 84
DEWPT 72 73 72 71 70 69 69 68 68 70 70 70 69 70 68 68
RH 93 94 56 65 93 93 57 61 87 93 55 61 82 90 52 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 SC SC B1 B1 FW SC B1 SC SC SC B1 B1 SC SC B1
POP 12HR 60 50 50 30 10 40 40 30
RAIN SHWRS NM IS SC SC IS SC SC SC IS SC
TSTMS SC SC 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