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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 AM EDT Wed May 6 2026
VAZ024-062000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
501 AM EDT Wed May 6 2026
Date Wed 05/06/26 Thu 05/07/26 Fri 05/08/26
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 76 56 63 42 72
TEMP 61 64 73 75 71 65 61 58 57 58 59 61 58 53 46 42 46 61 69 71 65
DEWPT 53 59 60 62 60 58 56 55 54 53 52 51 47 41 38 37 39 38 38 39 42
MAX/MIN RH 59 92 61 83 30
RH 75 84 64 64 68 78 84 90 90 83 78 70 67 64 73 82 76 42 32 31 43
WIND DIR S SW SW SW W W NW N N NE S W W NW NW NW NW W SW SW S
WIND SPD 8 9 10 9 5 4 1 0 3 4 3 3 4 2 2 1 1 2 5 6 2
WIND GUST 19 19 21 17
CLOUDS OV OV B2 B2 B2 OV OV OV OV B2 OV SC FW FW FW CL CL CL FW FW FW
CLOUDS(%) 100100 84 79 74100100100 90 85 88 40 23 22 13 5 5 4 14 11 11
VSBY 7 6 7 6 6 5 6 6 6 6 6 6 7 7 10 10 10 10 10 10 10
POP 12HR 80 90 80 0 0
RAIN SHWRS EC SC SC SC SC NM NM SC SC O IS
TSTMS SC SC IS
MIX HGT 1 2 4 2 <1 <1 <1 <1 1 2 2 3 <1 <1 <1 <1 <1 5 8 8 <1
T WIND DIR S S SW W W NW NW N N N NW W W NW NW NW NW W W W S
T WIND SPD 18 12 19 24 13 5 5 4 3 3 2 8 5 6 6 4 4 12 16 16 12
DISPERSION PR VP VP VP VP VP VP VP VP
ADI 26 24 69 69 9 5 5 4 5 7 6 26 3 3 3 2 5 74144129 6
MAX LVORI 3 4 1 1 3 4 5 6 6 4 4 3 3 3 3 5 4 1 1 1 2
STABILITY D D C C E D D D B C B A F G G G A A A B G
CEILING 1000 3000 3000 1000 100 None None None None None
STA PRES 28.32 28.32 28.36 28.35 28.34 28.32 28.40 28.47 28.49 28.39
Date Sat 05/09/26Sun 05/10/26Mon 05/11/26Tue 05/12/26
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 48 77 51 81 56 73 44 72
TEMP 51 51 74 70 55 55 78 74 63 57 70 64 49 47 69 66
DEWPT 42 46 51 51 49 50 55 58 56 52 47 42 39 38 38 41
RH 71 83 44 51 80 83 45 57 78 83 44 45 68 71 32 40
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW B1 SC FW FW SC SC B1 B2 B2 B1 SC SC SC FW FW
POP 12HR 10 10 0 50 60 40 10 5
RAIN SHWRS SC NM SC SC IS
TSTMS 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