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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 AM EDT Tue May 12 2026
VAZ024-122000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
1001 AM EDT Tue May 12 2026
Date Tue 05/12/26 Wed 05/13/26 Thu 05/14/26
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 50 75 46 66
TEMP 64 72 74 67 58 54 51 54 69 74 71 65 58 52 47 49 59 64 66 60
DEWPT 48 45 46 48 45 43 42 45 51 55 58 56 53 49 45 45 43 43 42 41
MAX/MIN RH 36 72 52 92 42
RH 56 38 37 50 62 66 71 71 53 51 63 73 83 89 93 86 55 46 42 49
WIND DIR S S S S SW SW SW SW SW SW SW SW W NW W NW NW NW NW NW
WIND SPD 2 4 5 2 3 3 4 4 6 6 5 3 2 2 3 6 9 10 11 6
WIND GUST 12 14 13 14 17 17 16 14 21 23 21 24 23
CLOUDS CL CL FW FW FW FW FW FW FW B2 B2 B1 B1 FW FW FW SC SC SC FW
CLOUDS(%) 1 5 19 6 17 7 8 6 25 73 81 68 68 9 9 10 35 50 39 25
VSBY 10 10 10 10 10 10 10 10 10 10 6 8 8 8 10 10 8 9 9 9
POP 12HR 0 0 70 50 0
RAIN SHWRS NM NM SC SC
TSTMS SC SC IS
MIX HGT 4 7 6 <1 <1 <1 <1 1 4 3 3 <1 <1 <1 <1 2 5 6 5 2
T WIND DIR S SW S S S S S S S SW SW S W NW NW NW NW NW NW NW
T WIND SPD 6 9 14 8 6 6 5 14 17 19 8 8 5 14 10 20 23 20 24 14
DISPERSION VP VP VP VP VP VP VP VP PR
ADI 34 76111 4 3 3 3 21 85 65 26 4 3 7 5 48131131100 7
MAX LVORI 1 1 1 2 3 3 3 3 1 1 2 3 5 5 6 4 1 1 1 2
STABILITY A A A G G G F A B C C F F G G B B B C F
CEILING None None None None 3000 4400 None None None
STA PRES 28.62 28.60 28.55 28.49 28.38 28.36 28.37 28.37 28.37
Date Fri 05/15/26Sat 05/16/26Sun 05/17/26Mon 05/18/26
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 43 77 51 87 59 90 63 92
TEMP 47 48 73 69 55 56 84 80 64 63 88 82 68 66 91 85
DEWPT 40 40 44 47 45 49 57 59 56 57 60 62 58 60 62 63
RH 76 74 35 45 69 77 40 49 75 81 39 51 70 81 38 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC FW SC SC SC SC FW FW SC SC SC FW SC
POP 12HR 0 0 5 5 10 10 5 20
RAIN SHWRS IS
TSTMS 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