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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
531 AM EDT Mon May 4 2026
NCZ003-042000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
531 AM 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 76 50 76 55 77
TEMP 46 63 70 74 67 60 56 54 56 66 72 75 73 65 62 59 56 65 71 76 72
DEWPT 36 41 42 42 43 45 44 44 46 48 45 47 49 50 51 52 54 59 62 62 62
MAX/MIN RH 31 79 37 93 63
RH 68 44 36 32 42 58 64 69 69 52 38 37 43 58 67 78 93 81 73 62 71
WIND DIR N SW SW SW S SW S SW SW S S S S S S S S SW SW SW SW
WIND SPD 0 5 8 9 4 2 2 1 3 6 11 14 8 4 4 5 5 6 9 6 3
WIND GUST 23 25 18 17 17 18 18 19 19 18 13
CLOUDS FW SC SC SC FW FW SC FW FW SC SC B1 B1 B1 B1 B2 B2 OV B2 B2 B2
CLOUDS(%) 13 39 33 27 25 12 40 17 7 27 38 54 51 58 68 84 87 88 86 85 86
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 5 20 80
RAIN SHWRS IS IS SC SC O O O
TSTMS SC SC SC
MIX HGT <1 4 8 8 <1 <1 <1 <1 <1 4 6 7 1 <1 <1 1 2 2 3 4 <1
T WIND DIR NW W W SW S SW SW SW SW SW S S S S S S S SW SW W SW
T WIND SPD 2 12 13 13 9 6 4 4 3 21 24 25 13 10 13 13 12 18 20 18 11
DISPERSION VP VP VP VP PR VP VP PR VP
ADI 2 60112114 4 3 2 2 3100111 89 12 7 9 9 27 48 69 67 5
MAX LVORI 3 1 1 1 2 3 3 3 3 1 1 1 2 3 3 4 4 3 3 1 3
STABILITY A A B B F G G G A B C D D E E E C C C C F
CEILING None None None None None None 3800 1700 400 2400
STA PRES 28.14 28.05 28.07 28.09 28.10 28.04 28.04 27.99 28.0 27.99
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 57 70 41 68 43 72 47 76
TEMP 61 58 68 61 49 45 64 62 49 49 69 66 52 53 72 69
DEWPT 59 58 60 50 41 38 41 43 41 43 49 50 46 47 51 53
RH 93100 76 67 74 76 43 50 74 80 49 56 80 80 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 B1 FW FW FW SC
POP 12HR 90 90 30 10 20 30 10 20
RAIN SHWRS O O O O SC IS IS SC SC IS
TSTMS SC IS 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