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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri May 1 2026
NCZ003-020800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
401 PM EDT Fri May 1 2026
Date 05/01/26 Sat 05/02/26 Sun 05/03/26 Mon
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 45 62 36 68 42
TEMP 66 63 54 50 47 46 53 58 61 57 47 40 37 41 55 63 67 61 49 44 42 47
DEWPT 39 38 42 41 39 37 36 35 33 32 31 30 29 30 32 33 33 35 35 34 34 37
MIN/MAX RH 76 35 73 27 73
RH 37 39 64 71 74 71 52 42 35 38 53 67 72 65 41 32 28 38 58 68 73 68
WIND DIR SW W NW NW NW N N N NW NW NW NW NW NW NW W W W W W W W
WIND SPD 6 2 2 2 3 4 3 4 5 4 3 2 2 2 3 4 4 2 1 1 1 1
WIND GUST 12 14
CLOUDS B1 B2 OV B2 OV OV OV OV B1 FW FW FW FW FW CL CL FW FW FW FW FW SC
CLOUDS(%) 59 87 88 80 91 91 90 93 58 17 9 7 8 6 4 5 6 6 14 24 19 38
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 30 5 0 5
RAIN C S S
MIX HGT 7 <1 <1 1 2 2 3 6 8 <1 <1 <1 <1 2 5 7 7 <1
T WIND DIR SW S W N N N N N N NW NW NW NW NW NW W W SW
T WIND SPD 11 11 1 17 19 19 16 18 19 14 11 6 5 11 12 11 11 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 55 5 1 8 9 46 66116 98 7 5 3 3 28 85 92101 2
MAX LVORI 1 2 3 3 3 3 1 1 1 2 2 3 3 2 1 1 1 2
STABILITY C F F F F C B B C F G G G A A A A G
CEILING 4700 5700 7200 None None None None None None
STA PRES 27.99 28.01 28.03 27.97 28.08 28.15 28.18 28.10
Date 05/04Tue 05/05/26Wed 05/06/26Thu 05/07/26Fri 05/08/26
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 77 47 79 54 79 56 74 44 69
TEMP 73 68 52 52 77 73 60 56 74 73 62 58 71 64 50 47 66 62
DEWPT 47 48 45 46 46 47 48 51 57 56 55 56 54 46 41 40 42 42
RH 40 49 77 80 33 40 64 83 55 55 78 93 55 52 71 76 42 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC FW SC B1 B1 B2 B2 B2 B2 B2 B1 SC SC SC SC
POP 12HR 10 0 5 30 50 70 60 20 10
RAIN SHWRS SC SC SC SC NM NM SC IS IS
TSTMS SC 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