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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1031 AM EDT Thu Apr 16 2026
VAZ018-162000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
1031 AM EDT Thu Apr 16 2026
Date Thu 04/16/26 Fri 04/17/26 Sat 04/18/26
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 86 61 82 57 87
TEMP 76 84 84 74 68 65 62 62 72 79 81 73 64 59 57 59 77 84 86 77
DEWPT 49 46 45 47 54 56 56 56 55 50 48 46 47 46 46 48 52 51 52 52
MAX/MIN RH 24 81 31 70 30
RH 39 27 26 38 61 73 81 81 55 36 32 38 54 62 67 67 42 32 31 42
WIND DIR W SW W W W W W W NW NW NW NW NW W W SW S SW SW SW
WIND SPD 9 11 11 5 4 5 4 5 6 6 5 2 1 1 1 1 3 6 6 4
WIND GUST 20 20 20 19 20 20 19 16 16 19 19 18
CLOUDS SC FW FW SC B1 B1 B1 SC FW FW FW FW FW SC SC SC SC B1 B1 B2
CLOUDS(%) 31 8 13 35 65 69 62 39 13 11 12 15 21 30 28 31 35 59 61 76
VSBY 10 10 10 7 6 6 7 10 10 10 10 10 10 10 10 10 10 7 7 6
POP 12HR 5 50 10 5 30
RAIN SHWRS IS SC SC SC SC SC NM
TSTMS IS IS IS
MIX HGT 3 6 7 <1 1 <1 <1 1 4 6 6 <1 <1 <1 <1 <1 3 7 6 <1
T WIND DIR W SW SW W W W W NW NW NW NW NW W W W SE SW SW SW SW
T WIND SPD 17 18 21 14 20 14 13 12 20 13 13 6 2 2 1 1 12 14 17 12
DISPERSION PR VP PR VP VP VP VP VP VP
ADI 85 74 88 7 14 10 9 17104 97 99 3 1 1 1 1 54114 78 8
MAX LVORI 1 1 1 2 2 3 4 3 1 1 1 2 2 3 4 3 1 1 1 2
STABILITY B C C F E E E A B B A G G G G A A B C E
CEILING None 7200 1000 None None None None None 8300
STA PRES 27.71 27.73 27.74 27.78 27.75 27.78 27.76 27.75 27.67
Date Sun 04/19/26Mon 04/20/26Tue 04/21/26Wed 04/22/26
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 48 61 37 58 35 71 49 75
TEMP 65 50 58 51 42 39 56 50 38 38 67 63 53 53 73 66
DEWPT 53 43 31 25 23 20 19 18 21 22 30 33 34 38 41 40
RH 65 77 36 36 46 46 23 28 50 52 25 32 48 57 31 38
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 SC FW FW CL FW CL CL FW SC FW FW FW SC
POP 12HR 60 40 10 5 0 0 5 20
RAIN SHWRS NM NM SC IS IS
TSTMS 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