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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri May 15 2026
VAZ012-160800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
401 PM EDT Fri May 15 2026
Date 05/15/26 Sat 05/16/26 Sun 05/17/26 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 48 82 55 87 58
TEMP 70 63 54 51 49 53 70 77 79 71 62 58 57 60 75 82 85 77 65 60 58 62
DEWPT 37 39 40 38 38 42 46 50 51 53 51 50 49 51 53 53 53 56 55 54 53 56
MIN/MAX RH 69 35 78 33 85
RH 30 41 59 61 66 66 42 39 38 53 67 75 75 72 46 37 33 48 70 81 83 81
WIND DIR W W SW SW W W SW W W W SW W W W W SW S S S S N N
WIND SPD 6 3 1 2 2 3 6 8 8 2 1 1 1 1 1 1 1 1 1 1 0 0
CLOUDS FW SC FW FW SC SC FW B1 SC SC SC SC SC SC FW FW FW FW FW FW FW FW
CLOUDS(%) 18 35 10 15 28 26 18 62 42 40 46 41 37 36 19 15 15 14 7 7 10 6
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 5 5 5 5
MIX HGT 4 <1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1 4 6 7 <1
T WIND DIR W W SW SW SW SW W SW W SW SW SW W W W SW S S
T WIND SPD 8 2 3 4 4 4 12 16 16 8 4 3 4 4 6 5 6 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 40 1 2 2 2 4 39 82 76 4 2 2 2 4 35 45 57 4
MAX LVORI 1 2 3 3 3 3 1 1 1 2 3 3 4 3 1 1 1 2
STABILITY B G G G G A B B B G F F G A A A A G
CEILING None None None None None None None None None
STA PRES 27.31 27.32 27.35 27.32 27.33 27.36 27.42 27.39
Date 05/18Tue 05/19/26Wed 05/20/26Thu 05/21/26Fri 05/22/26
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 88 58 84 60 80 56 74 53 74
TEMP 83 80 64 63 83 79 64 64 78 74 62 59 72 68 58 56 72 69
DEWPT 53 54 53 55 52 54 54 56 58 59 56 55 55 54 51 51 53 54
RH 36 41 67 75 34 42 70 75 50 59 81 87 55 61 77 83 51 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL FW FW FW FW SC SC SC B1 B2 B1 B1 B2 B2 B1 B1 B1 B2
POP 12HR 10 0 20 10 70 50 70 30 60
RAIN SHWRS IS SC NM SC SC NM NM SC SC SC NM
TSTMS IS IS SC IS SC SC
$$
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