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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Thu May 14 2026
VAZ024-142000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
331 AM EDT Thu May 14 2026
Date Thu 05/14/26 Fri 05/15/26 Sat 05/16/26
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 65 43 78 50 86
TEMP 49 49 58 63 64 60 51 46 43 48 65 74 77 69 59 53 50 54 74 82 85 78
DEWPT 46 45 40 40 39 39 39 40 39 39 40 41 42 44 42 41 41 44 50 54 58 58
MAX/MIN RH 39 83 29 72 38
RH 89 86 51 43 40 46 63 79 86 71 40 30 29 40 53 64 71 69 43 38 40 50
WIND DIR W NW NW NW NW NW W W W W NW NW W W N N N N SW SW SW S
WIND SPD 3 6 9 9 10 5 3 2 2 3 4 4 3 1 0 0 0 0 2 5 5 2
WIND GUST 19 19 19 20 21 16
CLOUDS CL CL SC B1 SC FW FW FW FW FW FW SC B1 SC SC SC B1 SC SC SC SC SC
CLOUDS(%) 4 5 30 59 37 21 7 10 6 9 7 29 54 42 34 41 51 40 27 39 41 42
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 9 8 8 10 10 9 10 10 9
POP 12HR 0 0 0 0 5
RAIN SHWRS IS
MIX HGT <1 2 5 6 6 <1 <1 <1 <1 1 5 6 6 <1 <1 <1 <1 <1 2 4 2 <1
T WIND DIR NW NW NW NW NW NW NW W W NW NW NW W W NW NW NW N SW SW SW S
T WIND SPD 10 18 17 18 21 18 5 4 4 12 17 13 9 2 2 3 2 1 6 8 12 3
DISPERSION VP PR VP VP VP VP VP VP VP VP
ADI 5 55 97 81141 8 3 2 2 24106 98 59 1 1 2 1 1 21 45 31 2
MAX LVORI 6 4 1 1 1 2 3 4 5 3 1 1 1 2 2 3 3 3 2 1 1 2
STABILITY G B B C B F G G G A A A B F G F F A A A A F
CEILING None None None None None None None None None None
STA PRES 28.36 28.39 28.46 28.48 28.52 28.49 28.57 28.59 28.62 28.56
Date Sun 05/17/26Mon 05/18/26Tue 05/19/26Wed 05/20/26
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 59 88 62 90 64 90 65 89
TEMP 63 62 87 82 66 65 90 84 68 68 90 84 71 69 89 82
DEWPT 56 57 58 60 57 59 61 61 60 61 62 62 60 62 62 63
RH 78 84 38 47 73 81 38 46 76 78 39 48 68 78 41 53
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC FW FW FW FW FW FW SC SC SC B1 B1
POP 12HR 20 5 10 5 10 10 20 50
RAIN SHWRS IS IS SC SC
TSTMS 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