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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Fri May 1 2026
VAZ012-012000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
301 AM EDT Fri May 1 2026
Date Fri 05/01/26 Sat 05/02/26 Sun 05/03/26
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 68 40 58 32 61
TEMP 36 40 53 64 67 56 49 44 41 42 51 55 57 50 42 35 33 36 51 57 61 54
DEWPT 31 32 28 30 31 34 38 37 36 34 31 29 28 28 27 28 27 27 27 26 27 28
MAX/MIN RH 26 80 32 80 27
RH 82 73 38 28 26 43 66 76 82 73 46 37 33 42 55 75 78 69 39 30 27 36
WIND DIR N S S W W NW NW N N N N NW NW NW NW NW NW NW NW W W W
WIND SPD 2 2 4 9 10 3 2 2 2 2 3 4 4 4 3 3 3 3 5 5 4 2
CLOUDS OV B2 FW FW B1 OV B2 B2 OV OV B2 B2 B1 SC SC FW SC FW FW FW CL FW
CLOUDS(%) 88 81 10 20 61 94 87 71 89 89 79 85 54 44 27 10 32 23 10 6 3 7
VSBY 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 20 5 0
RAIN S S S S
MIX HGT <1 <1 3 8 8 2 2 2 1 2 3 5 6 <1 <1 <1 <1 2 5 5 6 <1
T WIND DIR NE S S SW W W NW N NW NW NW NW NW NW NW NW NW NW NW NW W W
T WIND SPD 1 2 9 18 19 13 13 13 11 12 14 17 19 21 16 8 6 25 18 16 14 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 2 39147160 6 6 6 5 34 61 73 86 15 7 4 3 73106108102 3
MAX LVORI 6 3 1 1 1 2 3 4 4 3 1 1 1 2 3 3 5 3 1 1 1 2
STABILITY F B A B B F F F F B B C C E G G G A A A A G
CEILING None 18700 2900 2700 11200 None None None None None
STA PRES 27.17 27.10 27.14 27.13 27.12 27.11 27.20 27.23 27.29 27.23
Date Mon 05/04/26Tue 05/05/26Wed 05/06/26Thu 05/07/26
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 36 72 44 75 51 73 45 64
TEMP 38 42 70 63 48 49 71 65 55 54 66 63 52 48 60 54
DEWPT 30 33 38 40 40 41 42 43 45 48 52 48 47 42 38 36
RH 73 70 31 43 74 74 35 45 69 80 61 58 83 80 44 50
WIND SPD <15 <15 <15 <15 <15 <15 <15 15>
AVG CLOUDS FW FW SC SC FW FW FW B1 B1 B1 B2 B2 B1 B1 B1 B1
POP 12HR 0 10 5 20 50 70 50 40
RAIN SHWRS IS SC SC NM NM SC SC SC SC
TSTMS SC 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