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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Thu May 7 2026
NCZ001-080800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
731 PM EDT Thu May 7 2026
Date 05/07/26 Fri 05/08/26 Sat 05/09/26 Sun
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 37 59 45 64 50
TEMP 48 45 41 38 41 49 57 57 52 47 46 46 49 55 61 62 58 53 52 51 54
DEWPT 41 38 33 31 31 31 32 34 38 39 40 41 42 43 45 46 48 48 48 48 49
MIN/MAX RH 86 39 83 54 89
RH 77 76 73 76 67 50 38 42 59 74 79 83 77 64 56 56 69 83 86 89 83
WIND DIR NW NW NW NW NW NW SW SW S SW SW W W W W W W W W W W
WIND SPD 16 16 13 12 9 3 6 8 8 9 9 9 9 13 13 14 10 9 10 10 8
CLOUDS SC FW CL CL CL CL CL FW FW SC FW B1 B1 SC SC FW FW SC SC SC SC
CLOUDS(%) 33 6 3 3 2 2 4 17 23 27 19 61 57 34 28 22 25 26 45 37 46
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 0
POP 12HR 0 0 0 5 0
MIX HGT 2 <1 <1 <1 <1 3 6 5 <1 <1 <1 <1 1 4 6 5 1
T WIND DIR NW NW NW NW NW NW SW SW S S S SW W W W W W
T WIND SPD 18 12 10 6 8 3 6 11 12 8 6 6 24 24 26 21 16
DISPERSION GD GD FR FR PR PR PR PR FR PR FR FR
ADI 25 11 9 6 8 15 44 69 8 5 5 6 43 87114 89 11
MAX LVORI 3 4 3 4 3 2 1 1 3 3 4 4 3 1 1 1 3
STABILITY D D D D B A B B E E E D C C C C E
CEILING None None None None None None None None None
STA PRES 26.60 26.64 26.68 26.61 26.60 26.55 26.57 26.57
Date 05/10Mon 05/11/26Tue 05/12/26Wed 05/13/26Thu 05/14/26
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 67 49 57 38 58 46 61 47 62
TEMP 66 61 56 53 54 50 40 41 56 52 47 49 58 56 50 48 60 57
DEWPT 48 51 49 47 43 35 33 33 34 37 38 40 45 46 45 44 44 45
RH 52 70 77 80 66 56 76 73 43 56 71 71 62 69 83 86 55 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC B2 B1 SC FW FW CL FW SC SC B1 B1 SC SC SC SC
POP 12HR 30 40 30 0 5 20 40 30 20
RAIN SHWRS SC IS SC SC IS SC SC SC IS
TSTMS 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