Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 PM EDT Sat Apr 18 2026
NCZ001-190800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
802 PM EDT Sat Apr 18 2026
Date 04/18/26 Sun 04/19/26 Mon 04/20/26 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 36 48 36 49 32
TEMP 62 57 45 38 38 45 47 44 40 39 37 39 42 47 48 44 36 33 34 38
DEWPT 54 51 38 33 26 17 15 18 21 23 25 25 25 24 19 20 21 20 21 22
MIN/MAX RH 81 28 60 31 60
RH 75 80 76 82 62 32 27 35 46 52 61 57 50 40 31 38 54 58 58 52
WIND DIR W NW NW NW NW NW NW NW NW NW W NW NW NW NW NW NW NW W W
WIND SPD 11 12 23 29 28 25 24 18 14 12 11 21 26 23 20 17 10 8 6 6
WIND GUST 36 44 43 39 36 32 29 25 21
CLOUDS B2 B2 B2 OV B2 B1 FW FW FW CL FW FW FW FW FW CL CL CL CL CL
CLOUDS(%) 75 84 86 94 75 54 6 17 6 3 10 22 19 16 7 5 4 5 4 5
VSBY 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 50 5 0 0 0
RAIN SHWRS SC SC SC
TSTMS SC
MIX HGT <1 <1 <1 1 2 3 3 2 <1 <1 <1 1 4 5 4 1
T WIND DIR W W NW NW NW NW NW NW NW NW W W W NW NW N
T WIND SPD 9 9 25 39 37 41 33 17 10 8 6 12 28 27 24 17
DISPERSION FR FR GD GD GD FR FR GD FR PR PR
ADI 8 8 23 55 95132106 19 9 7 5 17110115 95 15
MAX LVORI 4 4 3 3 1 1 1 2 2 2 3 2 1 1 1 2
STABILITY D D D D C C C D D D E C C C C D
CEILING 700 300 15800 None None None None None None
STA PRES 26.58 26.61 26.67 26.71 26.78 26.78 26.80 26.80
Date 04/21Wed 04/22/26Thu 04/23/26Fri 04/24/26Sat 04/25/26
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 60 45 65 49 68 51 70 54 67
TEMP 57 54 47 51 62 60 52 52 65 61 53 54 67 64 56 56 64 61
DEWPT 29 35 33 36 35 35 41 44 42 43 42 44 44 45 44 47 48 48
RH 34 48 58 56 36 39 66 74 43 51 66 69 43 50 64 72 56 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC SC FW FW FW FW FW FW FW B1 SC SC B1 B2
POP 12HR 0 0 10 5 10 0 10 20 60
RAIN SHWRS IS SC NM
TSTMS 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
Graphical Hazards
Winter Weather
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