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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Thu May 7 2026
NCZ003-072000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
631 AM EDT Thu May 7 2026
Date Thu 05/07/26 Fri 05/08/26 Sat 05/09/26
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 66 43 68 47 75
TEMP 60 60 62 63 60 53 48 44 46 59 65 67 61 54 50 47 51 64 71 74 69
DEWPT 59 58 57 54 50 45 40 37 39 41 43 44 46 46 45 45 47 53 54 54 56
MAX/MIN RH 69 77 42 91 49
RH 96 93 84 72 69 74 74 76 76 51 45 43 58 74 83 93 86 67 55 50 63
WIND DIR NW N NE N W NW N N NW SW S S S S S SW SW SW SW W W
WIND SPD 4 5 5 5 4 6 5 4 3 2 5 8 6 4 3 3 3 6 9 8 4
WIND GUST 19 18
CLOUDS OV OV OV B2 SC FW CL FW FW CL CL FW FW SC SC SC SC SC SC SC SC
CLOUDS(%) 91 90 89 71 41 9 5 10 17 3 4 6 17 28 29 39 46 47 35 33 41
VSBY 6 7 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 80 0 0 0 5
RAIN SHWRS O SC SC
MIX HGT <1 2 2 2 <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 1 3 7 7 <1
T WIND DIR N N NE N N NW NW NW NW S SW SW S S S S S SW W W W
T WIND SPD 5 5 9 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 VP
ADI 6 14 26 22 1 2 1 1 1 11 55 64 3 2 2 1 10 56140127 2
MAX LVORI 6 5 3 3 4 3 3 4 4 2 1 1 3 3 6 7 5 1 1 1 3
STABILITY C C C C E F F F A A A B F F G G A B B B E
CEILING 800 1800 None None None None None None None None
STA PRES 28.80 28.80 28.88 28.95 28.98 28.90 28.88 28.81 28.79 28.74
Date Sun 05/10/26Mon 05/11/26Tue 05/12/26Wed 05/13/26
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 52 78 56 69 44 70 49 75
TEMP 55 56 75 72 61 57 66 62 47 47 67 64 52 52 71 69
DEWPT 53 53 56 59 57 52 48 42 38 38 40 43 43 45 51 53
RH 93 90 52 64 87 83 52 48 71 71 37 46 71 77 49 57
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B1 B1 B2 B2 SC SC FW FW FW FW SC SC B1
POP 12HR 5 40 60 40 0 0 20 30
RAIN SHWRS IS SC SC NM SC IS IS 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