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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon May 11 2026
WVZ043-120800-
RAWS 465401
37.53N 81.00W Elev. 2725 ft
801 PM EDT Mon May 11 2026
Date 05/11/26 Tue 05/12/26 Wed 05/13/26 Thu
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 39 69 49 66 43
TEMP 48 43 40 47 61 66 68 62 54 51 50 54 61 63 65 61 54 48 45 45
DEWPT 35 34 34 38 40 40 40 44 42 41 40 45 51 52 53 51 47 45 40 39
MIN/MAX RH 79 35 70 63 86
RH 60 70 79 71 46 38 36 52 64 68 68 71 70 67 65 70 77 89 82 79
WIND DIR N N S S SW W W SW S S SW SW SW SW W W NW NW NW NW
WIND SPD 1 0 1 1 3 5 5 2 4 5 5 6 9 11 11 8 6 5 5 9
WIND GUST 18 23 25 25 21 19 17 23
CLOUDS CL CL CL FW CL FW SC FW CL FW FW B2 B2 OV OV B2 B1 SC SC B1
CLOUDS(%) 2 2 2 6 5 14 27 19 3 6 9 77 85 95 95 76 55 48 48 53
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 30 70 60
RAIN SHWRS SC NM NM NM NM SC
TSTMS SC SC SC
MIX HGT <1 <1 <1 <1 6 6 6 <1 <1 <1 <1 1 4 3 3 <1
T WIND DIR W SW S S W W SW SW S S S SW SW SW W W
T WIND SPD 2 2 2 1 9 9 10 6 4 5 5 12 25 21 25 14
DISPERSION VP VP VP VP VP PR PR PR PR PR PR
ADI 1 1 1 1 63 71 79 3 2 3 3 17 99 52 62 13
MAX LVORI 3 3 3 3 1 1 1 2 3 3 3 3 1 1 1 3
STABILITY G G G A A A A G F F F C C D D D
CEILING None None None None None None 2400 1500 None
STA PRES 27.79 27.79 27.82 27.74 27.72 27.65 27.61 27.51
Date 05/14Fri 05/15/26Sat 05/16/26Sun 05/17/26Mon 05/18/26
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 56 39 66 50 78 58 82 60 85
TEMP 53 50 42 43 63 61 51 54 74 73 61 61 79 76 64 63 82 79
DEWPT 39 39 38 39 40 44 43 48 56 57 55 56 55 58 55 56 56 60
RH 59 66 86 86 43 53 74 80 53 57 81 84 44 54 73 78 41 52
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC FW SC SC SC SC SC B1 SC FW SC SC FW FW FW SC
POP 12HR 5 0 0 10 30 20 20 5 20
RAIN SHWRS IS SC IS IS IS IS
TSTMS IS IS IS IS
$$
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