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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Tue May 12 2026
VAZ018-130800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 AM EDT Tue May 12 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 42 74 51 71 46
TEMP 44 43 49 65 71 72 63 55 53 52 56 66 67 70 63 56 51 48 48
DEWPT 35 34 39 43 42 42 45 43 40 39 43 51 54 55 52 49 45 40 40
MIN/MAX RH 75 33 62 58 80
RH 70 70 68 45 35 34 52 64 61 61 62 58 63 59 67 77 80 74 74
WIND DIR N W N S SW SW S SW SW SW SW SW SW SW W W W NW NW
WIND SPD 0 1 0 3 4 4 2 3 5 6 8 8 8 9 6 5 4 6 13
WIND GUST 12 17 23 24 26 24 25 25 26 24 19 26 34
CLOUDS FW CL FW CL FW SC SC FW CL FW FW B1 OV OV B1 B1 SC SC SC
CLOUDS(%) 12 5 12 1 16 34 40 12 4 14 13 65 94 94 63 53 30 32 33
VSBY 5 1 10 10 10 10 10 10 10 10 10 9 10 10 9 10 10 10 10
POP 12HR 0 0 0 70 40
RAIN SHWRS NM NM SC IS
TSTMS SC SC
MIX HGT <1 <1 <1 5 7 6 <1 <1 <1 <1 <1 4 3 4 <1
T WIND DIR W W W W W SW S S SW SW SW W SW W SW
T WIND SPD 3 3 1 8 9 10 5 10 8 8 12 25 17 25 10
DISPERSION VP VP VP VP PR PR PR PR VP PR
ADI 2 2 1 53 73 81 3 5 4 4 15 98 56 89 7
MAX LVORI 3 3 3 1 1 1 2 3 3 3 2 1 1 1 3
STABILITY G G A A A A G G F F C C C C E
CEILING None None None None None 3000 2100 None
STA PRES 27.93 27.95 27.88 27.86 27.79 27.74 27.63
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 62 43 71 50 82 60 86 62 88
TEMP 59 53 45 47 68 63 52 56 79 75 63 63 84 77 65 67 86 80
DEWPT 40 39 37 38 41 44 41 47 56 57 53 55 56 58 53 56 58 60
RH 49 59 73 71 37 50 66 72 45 54 70 75 38 52 65 68 39 51
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC FW FW SC SC SC SC SC SC FW FW SC FW FW FW SC
POP 12HR 0 0 0 5 20 10 20 5 20
RAIN SHWRS IS IS IS IS
TSTMS 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