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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Tue May 12 2026
VAZ018-130800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 PM EDT Tue May 12 2026
Date 05/12/26 Wed 05/13/26 Thu 05/14/26 Fri
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 51 73 46 61 43
TEMP 56 53 51 55 68 70 69 61 56 51 47 48 54 58 60 55 50 47 45 50
DEWPT 41 37 36 41 50 52 54 52 49 43 39 39 40 40 39 38 37 36 34 36
MIN/MAX RH 60 52 80 46 70
RH 57 54 56 59 52 53 59 72 77 74 74 71 59 51 46 53 61 65 65 58
WIND DIR SW SW SW SW SW SW W W NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 4 5 6 6 6 8 6 5 5 5 6 13 12 11 12 9 5 4 4 5
WIND GUST 18 23 24 25 23 21 23 25 24 23 29 34 33 31 32 28 26 23 18 19
CLOUDS CL CL CL FW B2 B2 B2 B2 SC SC FW SC SC SC SC FW FW CL CL CL
CLOUDS(%) 5 3 5 20 74 71 77 73 41 27 17 32 36 47 47 23 11 4 3 5
VSBY 10 10 10 10 10 10 10 9 9 9 10 10 9 9 9 9
POP 12HR 0 50 40 0 0
RAIN SHWRS SC SC SC
TSTMS SC SC
MIX HGT <1 <1 <1 <1 4 5 3 <1 <1 <1 <1 3 4 5 5 1
T WIND DIR SW S SW SW SW SW W S NW NW NW NW NW NW NW NW
T WIND SPD 5 6 6 13 17 21 10 8 20 19 13 18 24 23 26 24
DISPERSION VP PR PR PR PR PR PR PR PR VP VP
ADI 3 3 3 17 64 92 33 5 14 9 6 55 92 93109 16
MAX LVORI 3 3 3 2 1 1 1 3 4 4 4 3 1 1 1 2
STABILITY F F F B C C C E E F F C C C C E
CEILING None None 3000 2800 None None None None None
STA PRES 27.86 27.80 27.76 27.65 27.62 27.61 27.65 27.68
Date 05/15Sat 05/16/26Sun 05/17/26Mon 05/18/26Tue 05/19/26
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 73 52 84 61 87 64 89 66 90
TEMP 69 64 54 58 82 76 65 66 86 78 67 67 88 81 70 70 89 82
DEWPT 40 44 41 47 58 58 55 58 59 61 56 58 60 61 57 60 60 61
RH 35 48 61 67 44 54 70 75 40 56 68 73 39 51 63 71 38 49
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC SC SC B1 B1 SC SC B1 SC SC FW B1 SC FW FW B1
POP 12HR 0 5 40 30 30 5 30 10 30
RAIN SHWRS SC SC SC SC SC
TSTMS SC SC SC 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
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