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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Tue Apr 7 2026
NCZ003-072000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
631 AM EDT Tue Apr 7 2026
Date Tue 04/07/26 Wed 04/08/26 Thu 04/09/26
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 64 31 59 32 65
TEMP 44 53 59 62 53 45 40 36 36 47 54 58 50 44 39 36 38 51 62 65 58
DEWPT 31 29 27 24 24 20 19 18 17 20 22 23 25 24 26 26 27 31 33 33 36
MAX/MIN RH 24 56 26 78 30
RH 60 39 29 23 32 36 42 47 45 34 28 26 37 45 59 67 64 46 33 30 44
WIND DIR N N N N N N NE N NE E E E E N N N N SE SE SE SE
WIND SPD 5 6 6 6 3 4 2 1 1 5 5 5 2 0 0 0 0 2 2 2 1
CLOUDS SC FW FW FW FW FW CL CL CL FW FW SC SC SC SC SC SC SC SC SC SC
CLOUDS(%) 33 17 18 15 10 6 4 4 4 9 14 26 33 38 45 47 45 49 42 37 30
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 5
MIX HGT 1 4 6 6 <1 <1 <1 1 2 3 4 4 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR N N NW N N NE NE E E E E SE E E E NE NE SE SE SE SE
T WIND SPD 12 14 13 10 12 9 5 13 14 10 9 10 8 4 4 2 3 5 3 3 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 20 68 88 72 6 4 3 6 33 39 43 53 4 2 2 1 3 20 16 16 2
MAX LVORI 2 1 1 1 2 2 2 2 1 1 1 1 2 2 3 3 3 2 2 2 2
STABILITY A B B B G F G G A A A A G G F F A A A A G
CEILING None None None None None None None None None None
STA PRES 28.35 28.34 28.43 28.50 28.58 28.52 28.55 28.53 28.52 28.43
Date Fri 04/10/26Sat 04/11/26Sun 04/12/26Mon 04/13/26
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 38 76 46 81 50 81 52 82
TEMP 43 42 72 65 50 48 78 72 57 53 78 73 59 55 80 75
DEWPT 34 35 42 44 40 40 48 50 48 48 52 50 49 50 52 51
RH 70 76 34 46 68 74 35 46 72 83 40 44 69 83 38 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW CL FW FW SC SC FW FW FW FW SC SC SC
POP 12HR 5 5 0 5 0 0 0 0
$$
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