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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EDT Fri May 8 2026
NCZ003-082000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
431 AM EDT Fri May 8 2026
Date Fri 05/08/26 Sat 05/09/26 Sun 05/10/26
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 69 48 76 52 80
TEMP 43 46 60 66 67 61 54 50 48 52 63 72 75 70 60 55 53 56 71 77 79 73
DEWPT 35 35 36 36 37 42 42 43 44 47 54 55 55 56 55 53 51 52 55 54 53 56
MAX/MIN RH 31 87 49 95 41
RH 73 65 41 33 33 49 64 77 86 83 72 55 50 61 84 93 93 86 57 45 41 55
WIND DIR N N S S S S S SW SW SW SW SW SW W W NW NW NW SW S SW S
WIND SPD 4 3 1 4 6 6 4 3 2 2 6 9 8 5 4 3 3 3 2 4 5 5
WIND GUST 19
CLOUDS FW CL CL CL FW SC SC FW SC B2 SC SC SC SC SC SC SC SC SC FW SC SC
CLOUDS(%) 20 2 1 3 12 38 41 21 28 72 48 43 40 33 27 44 40 43 27 21 38 36
VSBY 10 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 5 0 5
RAIN SHWRS IS
MIX HGT <1 <1 4 6 6 <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 4 7 6 <1
T WIND DIR NW NW N SW SW S S S S S SW W W W NW W W NW S S SW S
T WIND SPD 2 1 2 6 11 6 4 5 4 8 17 18 17 4 3 2 2 1 2 8 10 3
DISPERSION VP PR VP VP VP PR VP VP VP PR
ADI 1 1 11 52 79 3 3 3 2 8 78126115 2 2 1 1 1 12 69 79 2
MAX LVORI 3 3 2 1 1 2 3 4 5 4 3 1 1 3 5 7 7 6 2 1 1 2
STABILITY F A A A B F E G G B B B B F F F G A A A A F
CEILING None None None None None None None None None None
STA PRES 28.99 28.91 28.89 28.83 28.82 28.78 28.86 28.90 28.93 28.87
Date Mon 05/11/26Tue 05/12/26Wed 05/13/26Thu 05/14/26
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 56 69 43 69 48 72 49 73
TEMP 60 59 65 62 47 46 66 63 51 51 68 66 53 52 69 66
DEWPT 55 54 54 46 39 37 38 41 42 45 52 53 49 48 49 49
RH 84 83 68 56 74 71 36 44 71 80 57 63 86 86 49 54
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B2 B1 SC CL CL CL FW SC B1 B2 B1 FW FW FW
POP 12HR 30 70 5 0 10 60 30 10
RAIN SHWRS IS SC NM SC SC NM SC
TSTMS IS 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