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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EDT Thu May 7 2026
NCZ001-072000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
431 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 55 38 59 45 63
TEMP 56 53 49 52 51 48 44 41 39 41 49 57 57 52 47 45 46 51 54 60 62 58
DEWPT 53 51 49 48 44 41 37 34 32 32 32 34 35 39 40 40 40 42 43 46 47 49
MAX/MIN RH 74 81 42 82 57
RH 90 93100 86 77 77 76 76 76 70 52 42 43 61 76 82 79 71 66 60 58 72
WIND DIR W W NW NW NW NW NW NW NW NW W SW SW S S SW SW W W W W W
WIND SPD 10 9 9 10 17 18 17 14 12 10 4 6 9 8 9 9 9 10 14 14 14 9
CLOUDS OV B2 B2 B2 SC SC FW FW FW FW CL CL CL FW SC FW SC SC SC SC SC SC
CLOUDS(%) 89 80 81 81 50 42 11 19 24 15 3 4 5 6 31 24 33 42 40 36 33 33
VSBY 6 6 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 50 0 0 0 5
RAIN SHWRS O SC
MIX HGT 1 1 2 2 3 2 <1 <1 <1 <1 3 6 6 <1 <1 <1 <1 <1 3 5 5 1
T WIND DIR NW NW W NW NW NW NW NW NW NW SW SW SW S S SW SW SW W W W W
T WIND SPD 6 1 5 10 19 23 12 8 5 4 4 8 10 13 8 5 5 9 17 25 20 20
DISPERSION FR GD GD GD FR PR PR PR PR PR
ADI 6 1 14 28 61 31 11 7 5 5 21 54 65 9 5 4 4 10 59104 82 14
MAX LVORI 5 7 5 4 3 3 4 4 4 3 2 1 1 3 4 5 5 3 1 1 1 3
STABILITY D C C C C D D D D B A B B E E E E B C C C E
CEILING 300 None None None None None None None None None
STA PRES 26.53 26.54 26.60 26.63 26.66 26.60 26.60 26.53 26.52 26.54
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 50 67 50 59 39 62 47 67
TEMP 51 54 66 61 56 51 53 50 40 41 55 52 48 50 60 58
DEWPT 47 49 49 52 50 45 40 34 33 33 34 38 38 41 45 47
RH 86 83 54 72 80 80 61 54 76 73 45 59 68 71 58 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B1 B2 B2 B1 SC FW FW CL FW FW SC SC B1
POP 12HR 5 40 60 20 0 0 20 30
RAIN SHWRS SC SC NM NM IS IS IS SC
TSTMS IS 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