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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Wed May 13 2026
VAZ024-140800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
301 PM EDT Wed May 13 2026
Date 05/13/26 Thu 05/14/26 Fri 05/15/26 Sat
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 46 66 44 78 51
TEMP 72 65 58 53 48 49 59 63 65 60 52 47 44 48 65 75 78 70 59 54 52 55
DEWPT 55 55 53 49 45 44 41 41 40 39 40 40 39 40 41 41 42 43 42 42 42 45
MIN/MAX RH 90 40 82 27 72
RH 55 70 83 86 89 83 51 44 40 46 63 76 82 74 41 29 28 38 53 64 69 69
WIND DIR W SW W W W NW NW NW NW NW NW NW W NW NW W W W N N N N
WIND SPD 3 3 1 1 3 5 8 9 10 6 3 2 2 2 4 4 4 1 0 0 0 0
WIND GUST 13 13 17 18 21 23
CLOUDS OV B2 SC SC FW FW SC SC SC FW SC CL CL CL CL FW FW SC SC SC SC FW
CLOUDS(%) 88 74 49 33 22 7 27 48 42 10 28 5 4 3 5 25 23 29 40 45 41 23
VSBY 6 6 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 60 0 0 0 0
RAIN SHWRS EC SC
TSTMS SC IS
MIX HGT 3 <1 <1 <1 <1 3 5 6 6 <1 <1 <1 <1 2 5 5 6 <1
T WIND DIR SW SW W NW NW NW NW NW NW NW W W W NW NW NW W W
T WIND SPD 18 8 9 9 8 17 17 18 21 12 5 3 4 18 19 11 9 8
DISPERSION VP VP VP VP PR VP VP VP VP VP VP VP
ADI 58 4 4 4 4 56103123142 6 3 2 2 43118 78 65 4
MAX LVORI 1 3 5 5 6 4 1 1 1 2 3 4 5 3 1 1 1 2
STABILITY B F F G G A B B B F G G G A A A A G
CEILING None None None None None None None None None
STA PRES 28.31 28.32 28.38 28.40 28.44 28.46 28.52 28.50
Date 05/16Sun 05/17/26Mon 05/18/26Tue 05/19/26Wed 05/20/26
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 87 59 89 62 91 64 90 65 89
TEMP 83 79 64 62 87 81 66 66 89 84 68 67 89 84 70 69 88 82
DEWPT 55 58 56 57 59 60 58 59 60 61 59 61 61 61 60 61 63 62
RH 38 49 75 84 39 49 75 78 38 46 73 81 39 46 71 76 43 51
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC FW FW FW FW CL FW FW SC SC SC SC B1
POP 12HR 5 20 5 10 5 5 5 10 40
RAIN SHWRS IS IS 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