Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Aug 22 2026
NCZ006-230800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
801 PM EDT Sat Aug 22 2026
Date 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue
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 66 87 61 88 62
TEMP 72 69 67 67 79 85 86 77 69 65 62 63 79 85 87 79 70 65 62 63
DEWPT 70 69 67 67 66 61 59 59 58 57 56 58 60 59 58 59 57 54 53 54
MIN/MAX RH 100 41 84 37 76
RH 93100100100 64 45 40 54 68 75 81 84 52 41 38 50 63 68 72 72
WIND DIR W SW W W NW NW W NW N N N N NW W W N N N N N
WIND SPD 2 1 2 2 5 5 5 1 0 0 0 0 2 4 4 0 0 1 1 1
CLOUDS B2 SC FW CL FW CL FW FW FW CL FW FW FW FW FW FW SC FW SC FW
CLOUDS(%) 85 44 14 5 6 5 11 10 7 4 10 16 25 11 17 22 27 25 26 17
VSBY 4 4 2 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 30 0 0 0 0
RAIN SHWRS SC
TSTMS IS
Obvis PF PF PF
MIX HGT <1 <1 <1 <1 3 6 8 <1 <1 <1 <1 <1 4 7 8 <1
T WIND DIR S S SW W NW NW NW NW NW N N NW NW W W S
T WIND SPD 3 4 4 4 13 12 9 3 4 5 3 1 5 6 6 1
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 2 4 62 99 82 2 2 3 2 1 31 58 66 1
MAX LVORI 8 9 9 9 1 1 1 3 3 4 5 5 1 1 1 2
STABILITY F G G A A A A G G G G A A A A G
CEILING 4100 None None None None None None None None
STA PRES 29.29 29.27 29.33 29.31 29.37 29.41 29.43 29.39
Date 08/25Wed 08/26/26Thu 08/27/26Fri 08/28/26Sat 08/29/26
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 88 64 90 68 88 67 88 68 89
TEMP 86 77 66 66 88 81 70 70 85 79 70 70 86 80 70 70 87 81
DEWPT 59 61 62 63 68 68 69 70 72 72 70 70 72 72 70 70 72 71
RH 40 58 87 90 52 65 97100 65 79100100 63 77100100 61 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW SC SC B1 B1 B1 B1 B2 B1 SC SC B1 B1 SC B1
POP 12HR 0 5 20 30 50 50 30 30 30
RAIN SHWRS IS SC SC SC SC IS SC SC IS IS SC
TSTMS IS IS SC IS 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
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
