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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Thu May 14 2026
VAZ024-150800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
401 PM EDT Thu May 14 2026
Date 05/14/26 Fri 05/15/26 Sat 05/16/26 Sun
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 42 77 49 86 58
TEMP 64 58 50 45 42 47 64 74 77 69 58 53 50 54 73 82 85 78 68 62 59 62
DEWPT 37 37 38 37 37 38 39 41 41 44 42 42 42 44 49 53 56 56 56 55 55 56
MIN/MAX RH 81 28 74 36 88
RH 37 45 63 73 82 71 40 30 28 40 55 66 74 69 43 37 37 47 65 78 87 81
WIND DIR NW NW W W W W NW NW W W N N N N S S SW SW SW W W N
WIND SPD 10 6 3 2 2 3 4 4 3 1 0 0 0 0 2 5 5 2 2 1 1 0
WIND GUST 20 21
CLOUDS SC FW FW FW CL FW CL FW SC B1 SC FW SC FW FW SC SC SC SC SC SC SC
CLOUDS(%) 30 12 7 6 4 6 4 11 44 62 38 21 31 11 16 32 38 38 35 37 39 34
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 0 5 5
MIX HGT 6 <1 <1 <1 <1 1 5 6 5 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR NW NW W W W NW NW NW W W NW NW NW N SW SW SW S
T WIND SPD 20 14 5 3 4 12 19 12 9 5 3 3 3 1 6 9 11 8
DISPERSION PR VP VP VP VP VP VP VP VP VP VP VP
ADI 137 7 3 2 2 23116 87 61 3 2 2 2 1 28 56 42 4
MAX LVORI 1 2 3 4 5 3 1 1 1 2 3 3 3 3 2 1 1 2
STABILITY B F G G G A A A A F G G G A A A A G
CEILING None None None None None None None None None
STA PRES 28.46 28.46 28.52 28.48 28.57 28.60 28.63 28.59
Date 05/17Mon 05/18/26Tue 05/19/26Wed 05/20/26Thu 05/21/26
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 92 62 94 64 93 65 93 64 86
TEMP 90 82 66 66 92 86 69 67 92 86 70 68 92 83 70 67 84 79
DEWPT 58 60 57 59 61 61 58 60 61 61 59 61 63 63 61 61 61 60
RH 34 47 73 78 36 43 68 78 36 43 68 78 38 51 73 81 46 52
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW CL CL FW FW CL CL CL FW FW FW SC B1 B1 SC B1 B2
POP 12HR 5 5 5 5 10 5 40 30 60
RAIN SHWRS SC SC IS SC NM
TSTMS SC IS 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