Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EDT Sat Aug 15 2026
NCZ006-152000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
431 AM EDT Sat Aug 15 2026
Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26
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 90 72 92 75 95
TEMP 75 75 83 89 88 81 76 75 73 74 82 90 91 83 79 77 75 77 87 93 94 86
DEWPT 73 74 75 74 75 75 74 74 73 73 76 75 75 75 74 73 72 73 74 73 73 73
MAX/MIN RH 62 100 58 90 50
RH 94 97 77 61 66 82 94 97100 97 82 62 60 77 85 87 90 87 65 52 51 65
WIND DIR N NE NE N NW E N N N N S SW SW SW SW SW W W W W NW NW
WIND SPD 0 1 2 2 2 1 0 0 0 0 3 5 5 2 2 2 3 3 5 6 5 1
CLOUDS SC B1 B1 SC B1 B1 B1 SC B1 B2 B2 B1 B1 B2 SC FW FW FW SC SC SC SC
CLOUDS(%) 43 53 55 50 59 57 51 37 68 82 79 57 53 72 48 18 9 16 28 32 30 46
VSBY 6 1 10 10 10 10 10 9 5 4 9 10 10 5 10 10 10 10 10 10 10 10
POP 12HR 20 30 40 20 20
RAIN SHWRS IS IS SC IS IS IS SC SC IS IS IS IS IS IS
TSTMS IS IS IS IS IS IS IS IS IS IS IS IS IS IS
Obvis PF PF
MIX HGT <1 <1 3 5 5 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR N NE NE NW NW NE E SE SE SE S S W S S SW W SW NW NW W E
T WIND SPD 3 8 4 5 4 6 8 9 8 8 6 6 9 4 5 9 2 3 16 9 5 2
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 8 16 36 25 3 4 4 4 9 22 29 39 2 3 4 1 3 62 55 31 1
MAX LVORI 8 6 3 1 2 4 6 7 9 8 3 2 1 4 5 5 7 6 1 1 1 3
STABILITY F B B A B F F G F B B C A F F G G A A B A F
CEILING None None None 1600 700 21200 None None None None
STA PRES 29.48 29.43 29.44 29.41 29.41 29.31 29.26 29.25 29.25 29.19
Date Tue 08/18/26Wed 08/19/26Thu 08/20/26Fri 08/21/26
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 70 93 73 95 69 88
TEMP 76 73 90 84 73 72 91 85 76 75 92 84 73 70 85 80
DEWPT 70 70 71 68 68 69 70 69 70 71 70 69 67 65 67 66
RH 82 90 54 59 84 90 50 59 82 87 49 61 81 84 55 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC FW SC FW SC FW SC SC SC B1 B1 SC SC B1
POP 12HR 20 5 5 5 10 40 40 30
RAIN SHWRS IS SC SC SC
TSTMS IS SC 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
Radar
Current Weather
Rivers & Lakes
Satellite
Forecast Maps
Hour by Hour Forecast
Tropical Weather
Graphical Hazards
Weather Briefing Page
Forecast Discussion
Text Products
Climate Plots
Submit A Storm Report
Fire Weather
Drought
Recreation Forecast
NOAA Weather Radio
Aviation
Follow us on X
Follow us on Facebook
Follow us on YouTube
RNK RSS Feed
