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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Fri May 1 2026
NCZ003-012000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
301 AM EDT Fri May 1 2026
Date Fri 05/01/26 Sat 05/02/26 Sun 05/03/26
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 67 48 60 38 67
TEMP 48 51 59 62 67 62 57 53 51 48 51 56 60 56 49 43 40 42 54 62 66 60
DEWPT 36 37 35 36 38 41 44 43 41 42 41 40 38 36 35 33 31 32 32 32 32 35
MAX/MIN RH 34 79 44 72 29
RH 63 59 40 38 34 46 62 69 68 80 68 55 44 47 58 67 70 67 43 32 28 39
WIND DIR NE NE SE SW SW SW NW N N N N N N NW NW NW NW NW NW NW W W
WIND SPD 3 3 3 5 6 5 5 5 5 5 5 5 6 8 8 6 5 5 5 5 6 5
CLOUDS B1 B2 SC SC OV OV OV B2 OV OV OV OV B2 B1 SC FW FW FW FW CL CL CL
CLOUDS(%) 52 86 45 29 91 88 93 70 95 95 90 88 74 56 30 13 11 11 6 4 4 5
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 30 40 10 0
RAIN S C C C C C
MIX HGT <1 1 3 5 7 <1 <1 1 1 2 3 5 7 <1 <1 <1 <1 2 5 7 8 <1
T WIND DIR NE NE E S SW S SW NW N N N N NW NW NW NW NW NW NW NW W SW
T WIND SPD 6 6 5 8 10 10 6 2 2 11 11 11 13 9 10 8 3 4 10 11 11 4
DISPERSION VP PR PR PR PR PR PR PR PR PR
ADI 3 10 23 54 79 7 5 2 2 29 42 71107 8 7 4 2 10 68 92 92 2
MAX LVORI 3 2 2 1 1 2 3 3 3 3 1 1 1 2 3 3 3 3 1 1 1 2
STABILITY F B A A B E E E E C B B B D E F F A A A B F
CEILING None 15100 18100 4600 6900 13800 None None None None
STA PRES 28.95 28.86 28.85 28.86 28.84 28.81 28.94 29.01 29.05 28.97
Date Mon 05/04/26Tue 05/05/26Wed 05/06/26Thu 05/07/26
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 41 74 49 77 56 75 55 71
TEMP 44 45 71 68 54 51 74 71 60 58 70 69 59 55 67 64
DEWPT 35 36 42 43 45 46 46 48 51 53 56 55 53 49 44 42
RH 70 70 35 40 71 83 37 44 72 83 61 61 80 80 43 45
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL FW FW SC FW SC FW SC B1 B1 B2 B2 B1 B1 B1 SC
POP 12HR 0 5 0 5 40 60 50 30
RAIN SHWRS SC SC NM SC SC SC SC
TSTMS IS IS IS SC
$$
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