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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri May 1 2026
NCZ019-020800-
RAWS 312001
36.23N 81.32W Elev. 2380 ft
801 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 47 62 39 65 44
TEMP 54 50 48 47 52 59 60 54 47 43 41 44 53 62 63 57 49 46 46 49
DEWPT 40 40 37 34 31 29 30 30 30 29 29 30 30 30 30 33 32 32 33 36
MIN/MAX RH 67 31 64 27 62
RH 59 68 65 60 44 32 32 40 51 57 62 57 41 30 29 40 52 58 60 61
WIND DIR N N N N N N NW NW N NW NW NW W W W W W NW W W
WIND SPD 3 5 5 4 5 6 8 6 5 4 3 2 3 4 5 4 3 2 2 2
CLOUDS B2 B2 OV OV OV B2 SC FW FW FW FW FW CL CL CL CL FW FW FW SC
CLOUDS(%) 80 87 92 92 95 70 27 13 10 10 11 10 4 4 4 4 9 15 18 36
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 30 5 0 5
RAIN SHWRS SC IS IS
MIX HGT <1 <1 1 2 4 6 8 1 <1 <1 <1 2 5 7 6 <1
T WIND DIR W N N N N N NW NW NW NW NW NW NW W W W
T WIND SPD 8 16 16 17 18 18 20 14 13 3 2 12 11 11 13 9
DISPERSION VP PR PR PR PR VP VP VP VP VP VP
ADI 1 10 12 32 65112155 6 6 3 3 31 71 84 99 2
MAX LVORI 3 3 2 1 1 1 1 2 2 3 3 1 1 1 1 2
STABILITY F E E C B B B F F G G A A A A F
CEILING 4500 4600 6700 None None None None None None
STA PRES 27.78 27.80 27.80 27.76 27.87 27.94 27.97 27.90
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 74 50 76 56 76 59 71 46 67
TEMP 70 65 53 53 74 70 60 58 73 70 62 60 68 62 50 48 64 60
DEWPT 44 46 44 45 44 45 46 50 55 55 54 55 51 45 40 39 40 40
RH 39 50 71 74 34 41 60 75 53 59 75 84 54 54 68 71 41 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC FW SC B1 B1 B1 B2 B2 B2 B2 B1 SC SC FW SC
POP 12HR 10 0 5 30 60 70 60 20 20
RAIN SHWRS SC SC NM SC NM NM SC IS 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