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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Sun May 3 2026
VAZ018-032000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
401 AM EDT Sun May 3 2026
Date Sun 05/03/26 Mon 05/04/26 Tue 05/05/26
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 63 44 74 54 80
TEMP 35 38 51 59 63 55 47 46 45 50 62 70 73 66 59 57 54 57 73 79 78 69
DEWPT 27 27 27 26 27 28 28 27 29 34 42 46 48 47 45 43 43 46 48 45 44 45
MAX/MIN RH 26 56 40 69 29
RH 72 64 39 28 25 35 47 47 53 54 48 42 41 50 60 59 66 67 41 30 30 42
WIND DIR NW NW NW NW W W W W W W W SW SW SW SW SW SW SW SW S S S
WIND SPD 4 5 6 6 5 2 2 2 2 3 6 6 5 3 4 4 4 4 6 9 10 8
WIND GUST 20 18 17 12 12 14 20 21 19 16 18 18 18 18 23 25 27 27
CLOUDS CL CL CL CL CL FW SC B1 SC SC SC B1 B1 SC SC SC SC FW FW SC SC B2
CLOUDS(%) 2 2 1 3 5 6 31 56 44 48 37 54 54 36 30 29 28 17 13 38 50 74
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 5 30 5 5
RAIN SHWRS SC SC IS
TSTMS IS IS
MIX HGT <1 2 4 5 5 <1 <1 <1 <1 <1 3 4 5 <1 <1 <1 <1 <1 4 7 7 <1
T WIND DIR NW NW NW W W W W W W W W W SW S SW SW SW SW SW SW S S
T WIND SPD 10 20 16 13 12 4 2 2 5 6 13 17 19 4 9 8 4 4 18 25 27 12
DISPERSION VP VP VP VP VP VP VP VP VP PR
ADI 5 65 84 84 85 2 1 1 3 7 45 67 77 2 4 4 2 4 94190200 11
MAX LVORI 3 1 1 1 1 2 2 2 2 3 1 1 1 2 3 3 3 3 1 1 1 2
STABILITY F A B B A G G F F A B C C G F F F A B B B D
CEILING None None None None None None None None None None
STA PRES 27.82 27.77 27.78 27.77 27.78 27.70 27.72 27.75 27.74 27.70
Date Wed 05/06/26Thu 05/07/26Fri 05/08/26Sat 05/09/26
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 60 75 58 69 43 67 46 66
TEMP 63 60 70 66 61 59 65 58 47 46 62 58 49 50 64 59
DEWPT 47 53 59 56 54 55 51 41 35 37 37 37 37 43 48 45
RH 56 78 68 70 78 87 60 53 63 71 39 45 63 77 56 60
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 OV OV B2 B2 B2 B2 SC FW SC SC SC SC B1 B1
POP 12HR 60 80 80 70 20 20 30 40
RAIN SHWRS IS NM O O NM O NM NM IS IS IS SC SC SC
TSTMS SC 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