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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Mon May 11 2026
VAZ018-112000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
631 AM EDT Mon May 11 2026
Date Mon 05/11/26 Tue 05/12/26 Wed 05/13/26
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 62 42 72 52 69
TEMP 50 53 60 62 57 50 46 43 46 63 70 71 62 55 53 52 56 65 66 69 63
DEWPT 49 48 46 42 37 35 35 35 39 41 40 40 43 41 40 39 43 50 54 54 51
MAX/MIN RH 46 81 31 63 57
RH 96 83 60 48 47 56 65 73 76 44 33 32 50 59 61 61 62 58 65 59 65
WIND DIR NE N N NW NW N N N N SW SW SW S S SW SW SW SW SW SW W
WIND SPD 5 5 4 5 5 4 4 3 0 2 3 3 2 2 4 5 6 8 8 9 5
WIND GUST 18 21 24 24 25 26 27
CLOUDS OV OV OV SC FW FW CL CL CL FW FW SC SC FW FW SC B1 B2 OV OV SC
CLOUDS(%) 99 88 91 43 10 7 3 4 2 6 25 28 26 20 20 30 68 77 95 95 45
VSBY 3 3 6 10 10 10 7 2 10 10 10 10 10 10 10 10 10 9 10 9
POP 12HR 100 0 0 0 90
RAIN SHWRS O NM IS SC SC O O IS
TSTMS IS IS SC SC
MIX HGT 1 1 2 5 <1 <1 <1 <1 <1 5 6 6 <1 <1 <1 <1 1 4 2 4 <1
T WIND DIR NE NE N NW N W W NW N W W W S S SW SW SW W SW SW S
T WIND SPD 14 8 4 12 3 3 4 3 2 6 8 9 4 4 6 6 6 27 19 19 11
DISPERSION PR VP VP VP VP VP VP PR PR
ADI 23 14 13 83 2 2 2 2 2 44 63 69 2 2 3 3 9101 52 69 8
MAX LVORI 5 4 2 1 2 3 3 3 4 1 1 1 2 3 3 3 3 1 1 1 3
STABILITY C C C A F F F G A A A A G G F F C C C C E
CEILING 100 None None None None None None None 3500 8400
STA PRES 27.90 27.85 27.90 27.92 27.95 27.88 27.87 27.80 27.75 27.65
Date Thu 05/14/26Fri 05/15/26Sat 05/16/26Sun 05/17/26
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 49 64 43 73 51 83 60 87
TEMP 51 50 62 57 46 48 70 65 54 57 81 75 64 64 85 78
DEWPT 45 43 41 39 38 39 41 44 42 46 53 55 52 54 56 57
RH 80 77 46 51 73 71 35 46 64 67 38 50 65 70 37 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW CL FW FW FW FW SC SC SC FW FW FW
POP 12HR 20 0 0 0 5 5 10 10
RAIN SHWRS 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