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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat May 9 2026
NCZ001-100800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
801 PM EDT Sat May 9 2026
Date 05/09/26 Sun 05/10/26 Mon 05/11/26 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 50 67 51 57 39
TEMP 53 51 50 54 61 67 67 61 57 55 55 54 51 53 54 51 46 43 42 44
DEWPT 47 44 42 41 40 42 42 47 48 47 48 50 51 45 43 39 37 34 32 31
MIN/MAX RH 80 38 99 64 71
RH 80 77 74 61 46 40 40 60 72 74 77 86100 74 66 63 71 70 67 60
WIND DIR W NW NW NW NW W W W W W W N NW NW NW NW NW NW NW NW
WIND SPD 11 11 11 10 9 8 9 9 8 9 10 10 12 11 13 18 16 14 13 12
WIND GUST 20 24 23 26 29 27 24
CLOUDS SC SC SC FW FW FW FW FW SC B2 OV OV OV OV B1 SC FW FW FW CL
CLOUDS(%) 49 26 34 6 7 9 10 17 31 77 99 95 92 90 62 41 8 11 9 3
VSBY 10 10 10 10 10 10 10 10 10 10 10 8 10 10 7 10
POP 12HR 5 0 40 70 0
RAIN SHWRS NM NM
MIX HGT <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 1 2 2 3 2
T WIND DIR W W NW NW NW W W W W NW N NE NE N N N
T WIND SPD 6 6 8 9 14 11 13 13 5 5 3 5 10 14 9 13
DISPERSION FR FR FR PR PR PR FR GD GD GD FR
ADI 6 6 7 10 70 79 92 9 4 5 3 9 17 28 23 19
MAX LVORI 3 4 3 2 1 1 1 2 3 4 4 5 5 3 3 3
STABILITY D D D B B B B E E D D C D D D D
CEILING None None None None None 5100 500 400 None
STA PRES 26.61 26.64 26.72 26.70 26.74 26.73 26.74 26.72
Date 05/12Wed 05/13/26Thu 05/14/26Fri 05/15/26Sat 05/16/26
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 66 46 61 43 68 50 75
TEMP 57 53 46 49 59 57 50 47 55 52 44 46 61 58 51 54 68 65
DEWPT 33 37 36 39 45 46 44 42 39 38 38 39 41 44 42 44 47 50
RH 40 54 68 68 60 67 80 83 55 59 79 76 48 59 71 69 47 58
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL FW B1 B1 SC SC FW FW CL FW FW FW FW FW FW SC
POP 12HR 0 5 40 30 5 5 5 5 10
RAIN SHWRS SC SC SC
TSTMS SC 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