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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Thu Apr 23 2026
VAZ018-240800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 AM EDT Thu Apr 23 2026
Date 04/22/26 Thu 04/23/26 Fri 04/24/26 Sat
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 53 81 56 83 59
TEMP 54 54 57 72 79 80 70 63 59 57 59 76 80 82 73 64 61 59 60
DEWPT 42 41 43 47 47 45 45 44 44 45 46 47 45 45 46 48 48 48 52
MIN/MAX RH 65 32 64 29 73
RH 64 61 59 41 32 29 41 50 57 64 62 36 29 27 38 56 62 67 75
WIND DIR W W NW NW NW NW NW NW W W W W W W W W W W W
WIND SPD 3 3 3 6 6 6 2 2 2 2 2 3 4 4 2 2 2 2 3
WIND GUST 13 14 17 21 19 17 12 14 14 12 12 14
CLOUDS CL FW FW FW SC SC FW CL FW FW FW FW SC SC FW FW B1 B1 B2
CLOUDS(%) 3 10 11 9 28 34 18 5 7 17 23 20 37 28 24 16 52 52 87
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 5 10 30
RAIN SHWRS SC SC O
MIX HGT <1 <1 <1 5 7 7 <1 <1 <1 <1 <1 7 8 6 <1 <1 <1 <1 <1
T WIND DIR W W W NW NW NW NW W W W W W W W W W W W W
T WIND SPD 5 6 8 21 13 11 6 3 3 4 3 14 11 11 9 3 3 4 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 3 8126106 89 3 2 2 2 3118111 90 4 2 2 2 6
MAX LVORI 3 3 3 1 1 1 2 2 3 3 3 1 1 1 2 3 3 3 3
STABILITY G G A B B B G G G G A A A A G G F F B
CEILING None None None None None None None None 15300
STA PRES 27.80 27.81 27.75 27.73 27.71 27.69 27.62 27.62 27.59
Date 04/25Sun 04/26/26Mon 04/27/26Tue 04/28/26Wed 04/29/26
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 77 52 76 51 70 55 72 51 74
TEMP 74 67 56 54 74 66 53 52 67 64 57 56 69 66 56 54 71 66
DEWPT 56 50 47 46 46 46 44 44 48 46 47 51 56 52 47 47 46 42
RH 53 54 72 74 37 48 71 74 50 52 69 83 63 61 72 77 41 42
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 SC SC SC SC B1 B1 B1 B1 B2 B2 B1 B1 SC B1 B1
POP 12HR 80 30 20 10 30 70 80 30 30
RAIN SHWRS O O SC IS IS IS SC SC NM O SC SC IS SC SC
TSTMS SC SC 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