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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
531 PM EDT Sat May 2 2026
VAZ012-030800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
531 PM EDT Sat May 2 2026
Date 05/02/26 Sun 05/03/26 Mon 05/04/26 Tue
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 32 63 39 72 45
TEMP 50 44 38 34 36 49 57 62 54 44 42 40 44 62 69 72 65 54 50 46 50
DEWPT 25 25 25 25 26 23 23 23 26 29 29 31 35 40 44 45 45 44 44 43 44
MIN/MAX RH 72 23 71 37 90
RH 37 47 59 69 67 36 27 22 34 55 60 70 70 44 40 38 48 69 80 89 80
WIND DIR NW NW NW NW W NW W W W W W W W SW W W SW SW SW SW SW
WIND SPD 9 6 5 4 4 8 9 10 4 2 2 3 4 5 5 5 3 2 2 2 3
CLOUDS B1 SC CL FW CL CL FW FW FW FW SC SC SC SC B1 B1 SC SC SC SC FW
CLOUDS(%) 54 36 5 6 4 2 8 6 11 14 33 45 50 36 55 55 38 30 26 35 19
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 10 30 20
RAIN SHWRS SC SC IS IS
TSTMS IS IS
MIX HGT 2 <1 <1 <1 2 4 5 5 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR NW NW NW NW NW NW NW W W W SW W W SW W W SW
T WIND SPD 11 8 8 9 18 13 10 10 5 5 5 5 11 13 24 19 8
DISPERSION PR PR PR VP VP VP VP VP VP VP VP VP
ADI 5 4 4 4 47 72 66 69 3 3 3 3 11 46 98 81 4
MAX LVORI 2 3 3 4 1 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY F G G G A A A A G G G F A A C C G
CEILING None None None None None None None None None
STA PRES 27.17 27.24 27.29 27.24 27.23 27.22 27.22 27.16
Date 05/05Wed 05/06/26Thu 05/07/26Fri 05/08/26Sat 05/09/26
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 78 53 75 55 69 37 65 42 70
TEMP 78 68 59 54 71 67 59 55 65 54 42 41 63 56 46 46 67 61
DEWPT 41 42 45 49 54 54 54 54 51 39 35 34 34 36 38 41 44 45
RH 27 39 60 83 55 63 83 96 60 57 76 76 34 47 73 83 43 56
WIND SPD <15 <15 <15 <15 15> <15 <15 <15 <15
AVG CLOUDS FW SC B1 B1 B2 B2 B2 OV B2 B2 B1 SC FW SC SC SC B1 B1
POP 12HR 5 40 60 90 80 20 10 20 30
RAIN SHWRS SC SC NM NM O O NM IS IS IS SC
TSTMS SC IS 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