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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EDT Tue May 5 2026
VAZ012-060800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
831 PM EDT Tue May 5 2026
Date 05/05/26 Wed 05/06/26 Thu 05/07/26 Fri
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 55 70 51 63 37
TEMP 61 59 56 56 61 66 68 64 59 56 54 52 55 58 58 53 48 42 37 41
DEWPT 43 43 45 50 56 58 58 57 56 54 52 51 52 50 47 43 39 36 34 34
MIN/MAX RH 86 63 99 67 88
RH 51 55 66 80 84 75 70 78 90 93 93 96 90 75 67 69 71 79 89 76
WIND DIR S SW S SW SW W W W W NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 6 9 8 10 10 10 9 3 2 1 2 2 2 3 4 4 4 3 2 2
WIND GUST 24 25 24 23
CLOUDS SC B1 OV OV OV OV OV OV OV OV OV B2 B2 OV B2 B2 SC SC SC FW
CLOUDS(%) 46 60 94 96 92100 97 90 92 92 93 81 83 88 87 75 43 39 41 23
VSBY 10 10 6 6 6 6 6 3 3 6 6 6 6 6 6 7 7 10 10 10
POP 12HR 70 90 90 70 20
RAIN SHWRS NM NM SC NM O O O O O NM NM NM NM IS IS
TSTMS SC SC IS IS
MIX HGT <1 <1 <1 <1 3 3 3 <1 <1 <1 <1 1 2 3 3 1
T WIND DIR S S S S SW W W W W N E NW N NW NW NW
T WIND SPD 11 18 10 10 12 19 29 13 5 5 4 4 2 6 14 13
DISPERSION PR PR PR VP VP VP VP VP VP VP VP
ADI 8 12 7 11 37 57 88 6 3 3 2 7 6 22 51 9
MAX LVORI 2 2 3 4 3 3 1 4 6 6 8 8 6 3 1 3
STABILITY E E E C C C C F F F F B B B C E
CEILING None 4600 700 1100 1300 600 600 2100 None
STA PRES 27.13 27.08 27.10 27.13 27.15 27.10 27.05 27.07
Date 05/08Sat 05/09/26Sun 05/10/26Mon 05/11/26Tue 05/12/26
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 68 43 71 47 77 51 69 40 67
TEMP 62 59 46 47 68 63 49 50 75 68 56 53 67 58 44 42 64 58
DEWPT 34 38 40 42 46 47 46 47 48 52 52 50 47 42 38 37 36 36
RH 35 45 79 83 45 56 89 89 38 57 86 89 49 55 79 82 35 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC SC B1 SC FW FW FW B1 B1 B2 B2 B2 SC FW FW SC
POP 12HR 5 5 10 5 30 60 60 20 10
RAIN SHWRS SC SC NM NM SC 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