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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri May 1 2026
NCZ006-020800-
RAWS 310801
36.37N 79.29W Elev. 580 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 63 39 69 45
TEMP 55 53 52 51 55 58 62 58 49 45 41 45 58 64 67 61 50 49 46 51
DEWPT 47 47 42 40 40 39 37 37 35 32 32 34 34 33 34 37 38 39 40 44
MIN/MAX RH 79 38 71 29 81
RH 74 80 69 66 57 49 39 45 58 60 70 65 40 31 29 41 63 68 79 77
WIND DIR S NW N N N N N N NW NW NW NW NW W W SW S SW SW SW
WIND SPD 3 1 4 4 6 6 5 1 2 2 2 2 4 5 5 1 2 2 2 3
CLOUDS B1 B2 OV OV OV OV B1 SC FW FW FW FW FW CL CL FW FW FW FW FW
CLOUDS(%) 68 82 88 93 95 96 65 39 17 10 9 16 8 4 3 7 6 10 11 19
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 1 3 4 5 <1 <1 <1 <1 <1 6 7 7 <1
T WIND DIR S W N N N N N N NW NW NW NW NW W W SW
T WIND SPD 3 13 16 16 19 13 17 1 2 2 2 17 13 13 14 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 6 25 50 33 90 1 2 2 2 6 94 94110 2
MAX LVORI 3 4 3 3 1 1 1 2 3 3 3 3 1 1 1 2
STABILITY F F E C C C B G G G G A A A A G
CEILING 21300 8300 4600 9200 None None None None None
STA PRES 29.27 29.26 29.31 29.25 29.33 29.43 29.47 29.39
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 79 53 82 60 83 60 79 48 74
TEMP 75 70 58 57 80 76 63 62 78 77 65 62 75 69 53 51 70 67
DEWPT 45 48 49 50 48 49 53 54 56 57 58 60 59 48 45 44 42 42
RH 34 45 72 77 33 39 70 75 47 50 78 93 58 47 74 77 36 40
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC SC FW SC SC SC 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 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