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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Fri May 15 2026
VAZ018-152000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 AM EDT Fri May 15 2026
Date Fri 05/15/26 Sat 05/16/26 Sun 05/17/26
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 72 53 85 61 89
TEMP 59 69 72 64 57 54 53 57 74 82 82 73 67 63 61 65 80 86 88 80
DEWPT 38 40 41 42 41 39 39 44 49 52 55 56 54 52 50 55 57 56 56 59
MAX/MIN RH 32 61 35 72 33
RH 45 35 33 45 55 57 59 62 41 35 40 55 63 67 67 70 45 36 34 49
WIND DIR NW NW NW NW N N N N SW SW SW SW SW W W W W SW S S
WIND SPD 8 5 3 2 0 0 0 0 2 4 4 2 2 2 2 2 3 3 2 1
WIND GUST 23 16 12 14 14 12 13
CLOUDS CL SC FW B1 B1 SC FW FW SC SC SC B2 SC SC SC SC FW SC FW FW
CLOUDS(%) 2 31 25 58 56 42 23 23 26 37 39 81 36 44 40 29 24 26 19 21
VSBY 10 10 10 10 10 10 10 10 10 10 10 9 10 10 9 10 9 10 10 9
POP 12HR 0 5 5 5 5
MIX HGT 3 4 4 <1 <1 <1 <1 <1 3 6 4 <1 <1 <1 <1 <1 4 7 7 <1
T WIND DIR NW NW W W NW W NW SW SW SW W W SW W W W S S S S
T WIND SPD 17 13 8 3 3 2 2 1 9 12 11 1 3 4 3 2 1 9 12 13
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 70 73 42 2 2 1 1 1 36 95 61 1 2 2 2 2 6 76107 6
MAX LVORI 1 1 1 2 2 3 3 3 1 1 1 3 3 3 3 3 2 1 1 2
STABILITY B A A F F F G A A A A F G F G A A A A G
CEILING None None None None None None None None None None
STA PRES 27.83 27.81 27.87 27.89 27.90 27.88 27.88 27.92 27.97 27.95
Date Mon 05/18/26Tue 05/19/26Wed 05/20/26Thu 05/21/26
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 64 92 65 92 66 88 65 82
TEMP 66 68 91 83 69 69 89 83 70 70 85 78 68 67 79 72
DEWPT 54 58 57 57 55 58 54 55 54 58 59 59 58 59 57 55
RH 65 70 32 41 61 68 30 38 57 66 41 52 70 75 47 55
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC FW CL FW FW SC SC B1 B2 B1 B1 B1 B1
POP 12HR 5 20 10 10 5 60 30 50
RAIN SHWRS IS SC NM SC IS SC SC
TSTMS IS SC 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