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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Thu May 7 2026
NCZ003-080800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
401 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 42 68 48 75 52
TEMP 62 59 53 48 43 46 59 65 67 61 54 50 48 51 63 71 74 69 60 55 53 56
DEWPT 56 51 45 40 36 39 39 41 42 45 45 45 45 48 54 54 55 56 56 54 52 53
MIN/MAX RH 84 39 90 51 97
RH 81 75 74 74 76 76 47 41 40 56 71 83 89 89 72 55 51 63 87 96 96 90
WIND DIR N NW N N N N SW SW SW S S SW SW S SW SW SW SW W W NW NW
WIND SPD 5 4 5 5 4 3 2 4 6 6 4 3 3 3 6 9 8 5 4 3 3 3
CLOUDS B2 SC FW FW FW FW CL CL FW FW SC SC SC B2 SC SC SC SC SC SC SC SC
CLOUDS(%) 72 26 6 6 15 6 2 5 14 14 34 35 41 77 41 33 29 34 31 39 37 44
VSBY 9 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 8 10
POP 12HR 0 0 5 5 0
MIX HGT 2 <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 1 3 7 7 <1
T WIND DIR N N NW NW NW NW S SW SW S S S S S SW W W W
T WIND SPD 8 1 3 2 2 1 2 8 10 5 4 3 2 6 14 19 17 3
DISPERSION VP PR PR VP PR VP VP VP PR VP VP VP
ADI 22 1 2 1 1 1 11 55 64 3 2 2 1 10 56140127 2
MAX LVORI 3 4 3 3 4 4 2 1 1 3 3 6 7 5 1 1 1 3
STABILITY C E F F F A A A B F F G G A B B B E
CEILING None None None None None None None None None
STA PRES 28.88 28.95 28.98 28.90 28.88 28.81 28.79 28.74
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 79 56 69 44 70 50 73 51 74
TEMP 76 72 61 58 66 63 47 47 67 64 52 52 70 67 55 53 71 68
DEWPT 55 58 56 53 51 43 39 38 40 43 43 45 51 53 51 50 51 51
RH 48 61 84 83 58 48 74 71 37 46 71 77 51 61 86 89 49 54
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B2 B1 FW CL CL FW SC SC B1 B1 SC SC SC FW
POP 12HR 10 30 40 0 0 10 40 20 10
RAIN SHWRS IS SC SC IS IS SC IS
TSTMS 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