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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 AM EDT Sun May 3 2026
NCZ006-040800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
1231 AM EDT Sun May 3 2026
Date 05/02/26 Sun 05/03/26 Mon 05/04/26 Tue
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 37 68 43 78 54
TEMP 43 39 42 55 64 67 61 50 46 44 49 67 76 78 72 63 59 55 57
DEWPT 32 31 32 30 29 31 34 34 34 37 42 45 42 44 46 46 47 48 51
MIN/MAX RH 73 25 80 29 82
RH 65 73 67 38 27 26 36 54 63 76 77 45 30 30 39 54 64 77 80
WIND DIR NW NW NW NW NW W S S S SW SW SW SW SW S S S SW SW
WIND SPD 3 2 3 5 5 3 1 1 2 2 2 4 8 8 3 5 5 5 5
CLOUDS CL CL CL CL CL FW FW FW FW FW FW FW SC FW SC FW SC SC FW
CLOUDS(%) 4 2 2 2 3 6 8 7 10 14 15 21 29 22 30 23 30 27 12
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 5 5
MIX HGT <1 <1 1 5 6 7 <1 <1 <1 <1 <1 4 6 7 <1
T WIND DIR NW NW NW NW NW W SW S S SW SW W SW SW S
T WIND SPD 5 5 21 13 11 10 2 4 5 4 4 12 13 17 4
DISPERSION VP VP VP VP VP VP VP PR PR PR
ADI 3 3 33 84 87 86 1 2 3 2 5 61 94129 2
MAX LVORI 3 3 3 1 1 1 2 3 3 4 4 1 1 1 2
STABILITY G G A A A A G G G G A A B B G
CEILING None None None None None None None None
STA PRES 29.41 29.48 29.40 29.40 29.40 29.39 29.30
Date 05/05Wed 05/06/26Thu 05/07/26Fri 05/08/26Sat 05/09/26
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 82 60 83 62 77 46 73 48 76
TEMP 81 77 64 62 78 78 67 63 72 66 50 49 69 65 51 52 73 68
DEWPT 49 50 55 57 60 60 62 63 62 50 43 42 40 43 42 46 50 51
RH 33 39 73 84 54 54 84100 71 56 77 77 35 45 71 80 44 54
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 B1 B2 B2 B2 B2 B2 B2 SC FW FW SC SC SC B1 SC
POP 12HR 0 30 50 70 80 20 10 20 30
RAIN SHWRS SC SC SC SC NM O NM IS IS IS SC
TSTMS IS SC IS 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