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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 AM EDT Wed May 13 2026
VAZ018-132000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
931 AM EDT Wed May 13 2026
Date Wed 05/13/26 Thu 05/14/26 Fri 05/15/26
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 75 47 62 44 74
TEMP 70 72 68 62 56 51 47 47 54 59 59 54 50 46 44 48 62 70 73 65
DEWPT 50 51 53 51 48 44 39 38 39 39 38 37 37 37 36 38 40 39 38 41
MAX/MIN RH 45 77 44 72 28
RH 49 48 59 67 74 77 74 71 57 47 45 52 61 71 73 68 44 32 28 41
WIND DIR SW W W W NW NW NW NW NW NW NW NW NW NW NW NW NW W W W
WIND SPD 8 6 6 5 4 4 8 13 11 10 11 9 5 4 4 6 6 5 4 1
WIND GUST 23 21 21 26 24 23 28 33 28 26 28 28 28 24 20 25 21 16 14
CLOUDS SC B2 B1 B1 SC SC SC SC SC B1 SC SC FW FW CL CL FW SC SC SC
CLOUDS(%) 43 83 69 64 42 27 37 43 45 54 48 31 9 7 5 5 17 31 37 46
VSBY 10 10 10 9 8 10 10 10 9 10 10 9 10 10 10 10 10 10 10 9
POP 12HR 80 50 5 5 0
RAIN SHWRS NM SC SC
TSTMS SC SC
MIX HGT 4 5 2 <1 <1 <1 <1 2 4 5 4 1 <1 <1 <1 2 4 4 5 <1
T WIND DIR SW SW W SW NW NW NW NW NW NW NW NW NW NW NW NW NW NW W W
T WIND SPD 14 23 10 9 16 18 16 24 24 23 26 21 18 9 8 26 21 14 14 11
DISPERSION PR VP VP PR PR PR VP VP VP
ADI 73 94 21 6 7 8 11 68 88 92104 15 8 4 4 67104 81 91 5
MAX LVORI 1 1 2 3 4 4 3 3 1 1 1 2 3 3 3 1 1 1 1 2
STABILITY B C C E F F E C C C C E F F F B B A A F
CEILING 3400 None None None None None None None None
STA PRES 27.66 27.63 27.62 27.67 27.70 27.73 27.75 27.81 27.79
Date Sat 05/16/26Sun 05/17/26Mon 05/18/26Tue 05/19/26
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 53 85 59 89 62 90 64 90
TEMP 54 57 81 75 63 64 88 78 66 67 89 81 68 68 89 81
DEWPT 39 46 56 57 54 56 56 58 55 58 59 59 57 59 58 58
RH 57 67 42 54 72 75 34 50 68 73 37 47 68 73 35 46
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC SC B1 FW SC FW FW FW FW SC SC
POP 12HR 5 20 20 30 20 10 10 20
RAIN SHWRS IS IS SC IS IS
TSTMS IS IS SC 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