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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri May 1 2026
NCZ005-020800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
801 PM EDT Fri May 1 2026
Date 05/01/26 Sat 05/02/26 Sun 05/03/26 Mon
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 49 62 40 68 44
TEMP 56 54 51 50 53 58 61 57 49 45 42 46 56 63 67 60 51 49 46 50
DEWPT 46 45 41 38 37 36 34 34 33 31 31 33 33 33 33 37 37 38 39 42
MIN/MAX RH 73 35 66 28 78
RH 69 71 68 63 54 44 36 42 54 58 65 60 42 32 28 42 59 66 76 74
WIND DIR S N N N N N N N N NW NW NW NW W W SW SW SW SW SW
WIND SPD 4 3 5 6 8 6 6 3 4 3 3 3 6 6 5 3 3 3 3 4
CLOUDS B2 B2 OV OV OV OV SC SC FW FW FW FW FW CL CL FW FW FW FW FW
CLOUDS(%) 77 81 92 92 95 95 42 33 16 11 13 12 6 4 3 6 6 11 20 23
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 30 50 5 0 0
RAIN SHWRS SC SC SC IS
MIX HGT <1 <1 <1 2 3 4 6 <1 <1 <1 <1 <1 6 7 7 <1
T WIND DIR SW NW N N N N N N N NW NW NW NW W W SW
T WIND SPD 11 11 12 17 19 12 18 2 14 3 3 13 12 12 13 3
DISPERSION VP VP PR VP VP VP VP VP VP VP VP
ADI 3 1 6 41 51 42104 1 2 2 2 4 67 74110 2
MAX LVORI 3 3 3 1 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY E F E C C B A G F G G A B B A G
CEILING 20400 8000 4400 None None None None None None
STA PRES 29.16 29.17 29.21 29.15 29.24 29.33 29.38 29.29
Date 05/04Tue 05/05/26Wed 05/06/26Thu 05/07/26Fri 05/08/26
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 53 81 60 81 60 76 48 72
TEMP 73 70 58 57 79 74 64 62 78 76 66 62 73 67 52 52 68 65
DEWPT 44 47 48 49 47 47 51 54 55 56 57 59 57 47 43 44 42 42
RH 35 44 69 75 32 38 63 75 45 50 73 90 57 49 71 74 39 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC FW SC B1 B1 B1 B1 B2 B2 B2 B1 SC SC FW SC
POP 12HR 5 0 0 20 40 60 60 20 10
RAIN SHWRS IS SC SC SC NM NM SC IS IS
TSTMS IS 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