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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Thu May 14 2026
NCZ005-150800-
RAWS 310540
36.38N 79.70W Elev. 858 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 44 76 51 84 61
TEMP 66 62 51 47 45 50 64 73 76 70 58 55 52 57 73 82 83 78 67 64 61 64
DEWPT 38 37 37 38 39 40 40 40 41 45 44 43 43 46 50 51 53 55 53 53 55 58
MIN/MAX RH 80 28 72 34 82
RH 36 39 59 71 79 68 41 30 28 41 59 64 71 67 44 34 36 45 61 67 81 81
WIND DIR NW NW NW W W NW NW NW W SW S SW SW SW SW SW SW S S S SW SW
WIND SPD 11 9 4 4 4 4 5 4 3 2 2 2 3 4 8 10 10 4 4 5 5 6
CLOUDS SC FW CL CL CL FW CL FW CL SC SC SC SC SC FW SC SC SC SC SC SC SC
CLOUDS(%) 26 7 5 5 5 6 2 9 5 33 48 29 31 29 22 28 26 39 43 35 34 37
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 0 0
MIX HGT 7 <1 <1 <1 <1 <1 5 6 6 <1 <1 <1 <1 <1 3 5 6 <1
T WIND DIR NW NW NW W W W NW NW W SW SW S S SW SW SW SW S
T WIND SPD 16 11 8 3 4 5 14 8 8 2 3 3 2 3 12 11 11 3
DISPERSION PR VP VP VP VP VP VP VP VP VP PR PR
ADI 76 8 4 2 2 7 86 62 62 1 2 2 1 4 50 67 75 2
MAX LVORI 1 2 3 3 5 3 1 1 1 2 3 3 3 3 1 1 1 2
STABILITY C E F F F A A A A G F G G A B B B F
CEILING None None None None None None None None None
STA PRES 29.26 29.28 29.33 29.27 29.35 29.38 29.42 29.37
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 90 63 92 65 91 66 91 65 86
TEMP 88 82 68 67 91 85 70 68 89 84 71 69 89 83 70 68 84 79
DEWPT 58 61 59 61 59 61 59 62 60 60 61 63 62 63 62 63 61 61
RH 36 49 73 81 34 45 68 81 38 44 71 81 41 51 76 84 46 54
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL CL FW CL CL FW FW FW FW FW B1 SC SC B1 B1
POP 12HR 0 0 5 0 5 5 40 30 50
RAIN SHWRS SC SC SC SC
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