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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Fri May 1 2026
VAZ018-012000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 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 45 61 37 64
TEMP 53 64 67 57 50 47 45 46 54 58 60 52 44 40 37 41 52 60 62 55
DEWPT 30 32 32 35 38 38 36 35 35 32 31 30 30 30 28 29 30 29 29 30
MAX/MIN RH 27 71 33 69 28
RH 41 30 27 43 63 71 70 65 48 37 33 43 57 67 70 62 43 31 28 38
WIND DIR S SW W NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW W W
WIND SPD 5 8 11 5 4 3 3 3 3 4 6 6 5 4 5 6 8 8 6 3
WIND GUST 18 19 17 16 16 14 14 14 17 23 20 18 19 23 24 23 19 14
CLOUDS FW FW B1 SC B2 B2 B2 B2 B2 B2 B1 SC SC FW FW FW FW FW CL FW
CLOUDS(%) 22 6 51 50 87 77 85 87 84 80 60 31 29 11 14 10 11 6 2 6
VSBY 10 10 10 10 10 9 9 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 20 10 0
RAIN S S S S
MIX HGT 3 7 8 2 1 <1 <1 2 4 6 6 1 <1 <1 <1 3 5 6 6 <1
T WIND DIR S SW W SW NW NW NW NW N NW NW NW NW NW NW NW NW NW W W
T WIND SPD 10 14 17 4 19 16 12 10 11 11 16 24 25 19 8 24 18 17 16 9
DISPERSION PR VP VP VP PR PR VP PR VP
ADI 43115 63 3 13 7 6 23 52 50 72 11 11 9 4 83104116105 4
MAX LVORI 1 1 1 2 2 3 3 3 1 1 1 2 2 3 3 1 1 1 1 2
STABILITY A B D E E F F B B C C F F F F B B B B G
CEILING None None 4200 11300 12900 None None None None None
STA PRES 27.73 27.63 27.67 27.68 27.66 27.64 27.73 27.77 27.82 27.77
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 42 76 52 78 58 73 52 67
TEMP 43 47 72 65 55 55 75 68 60 59 68 65 56 53 63 57
DEWPT 30 35 41 42 41 44 45 45 47 50 55 50 48 44 40 38
RH 60 63 33 43 59 66 34 43 62 72 63 58 74 71 43 49
WIND SPD <15 <15 <15 <15 <15 <15 <15 15>
AVG CLOUDS FW FW SC SC FW FW FW B1 B1 B1 B2 B2 B2 B1 B1 B1
POP 12HR 0 10 5 20 50 70 60 40
RAIN SHWRS IS IS SC NM NM NM SC SC SC
TSTMS IS SC IS SC
$$
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