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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Mon May 4 2026
NCZ003-042000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
131 PM EDT Mon May 4 2026
Date Mon 05/04/26 Tue 05/05/26 Wed 05/06/26
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 75 53 76 59 78
TEMP 70 74 68 61 58 56 58 67 73 75 73 67 63 61 59 65 73 77 73
DEWPT 39 40 41 44 44 44 46 48 45 44 49 50 53 53 56 59 60 61 61
MAX/MIN RH 29 73 33 88 58
RH 32 29 37 53 59 64 64 50 37 33 43 54 70 75 90 81 64 58 66
WIND DIR SW SW S SW SW SW SW SW SW SW S S S S S SW SW SW SW
WIND SPD 6 8 8 9 9 6 5 9 11 13 11 12 13 12 11 11 11 11 10
WIND GUST 24 25 21 23 25 23
CLOUDS FW SC FW FW SC FW FW FW SC B1 B1 B1 B1 B2 OV OV B2 B2 B2
CLOUDS(%) 18 39 13 11 34 7 7 8 36 56 57 58 62 82 91 88 83 79 87
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 0 0 40 70
RAIN SHWRS SC SC SC SC NM NM O
TSTMS IS IS SC
MIX HGT 7 8 <1 <1 <1 <1 <1 3 6 7 <1 <1 1 1 2 2 5 4 <1
T WIND DIR SW SW SW SW SW SW SW SW SW S S S S S S SW SW SW SW
T WIND SPD 12 13 5 6 5 4 4 19 21 23 9 12 14 13 11 14 23 18 6
DISPERSION PR PR PR PR FR FR FR FR FR
ADI 94113 3 3 4 2 4 80100109 8 11 13 12 19 39 68 65 6
MAX LVORI 1 1 2 2 3 3 3 1 1 1 2 2 3 4 4 3 1 1 3
STABILITY B B F F E F A B C C D D D D D C D C D
CEILING None None None None None None 2000 400 2700
STA PRES 28.89 28.91 28.94 28.95 28.87 28.87 28.84 28.84 28.81
Date Thu 05/07/26Fri 05/08/26Sat 05/09/26Sun 05/10/26
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 59 69 44 67 45 72 48 75
TEMP 63 60 66 62 50 47 64 61 49 49 69 65 53 53 72 69
DEWPT 61 60 60 51 43 40 40 43 43 44 49 51 48 48 51 53
RH 93100 81 67 77 76 41 51 80 83 49 60 83 83 48 57
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 OV OV B2 B1 SC SC SC SC SC SC SC FW FW SC SC
POP 12HR 90 90 30 20 20 20 5 10
RAIN SHWRS O O O NM SC IS IS IS IS
TSTMS SC 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