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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Thu Apr 30 2026
NCZ003-010800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
131 AM EDT Thu Apr 30 2026
Date 04/29/26 Thu 04/30/26 Fri 05/01/26 Sat
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 53 68 43 69 48
TEMP 58 55 56 61 66 67 59 53 47 43 46 57 64 68 63 56 53 50 48
DEWPT 52 50 48 46 41 36 37 35 35 34 36 36 36 38 40 41 42 41 44
MIN/MAX RH 93 33 71 33 84
RH 80 83 74 58 40 32 44 50 63 70 68 45 35 33 43 57 66 71 86
WIND DIR NW NW NW NW NW NW NW N N N N E SW SW SW W N N N
WIND SPD 8 5 8 10 10 12 9 8 5 4 3 3 5 6 5 5 5 5 5
CLOUDS B1 B2 B2 SC FW FW FW FW SC B1 B1 SC SC B1 B2 B2 OV B2 OV
CLOUDS(%) 68 87 74 38 21 25 6 25 49 60 62 38 42 63 77 81 88 86 88
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 0 0 5 40
RAIN SHWRS SC SC SC
TSTMS
MIX HGT <1 <1 1 4 7 7 <1 <1 <1 <1 <1 4 6 7 <1
T WIND DIR W NW NW NW NW NW NW N N N N SE S SW SW
T WIND SPD 3 6 12 12 10 12 11 10 9 5 3 3 6 10 9
DISPERSION PR PR PR PR PR VP PR PR PR PR
ADI 3 5 21 64 74 93 8 7 6 4 4 16 50 76 6
MAX LVORI 5 5 3 1 1 1 2 2 3 3 3 2 1 1 2
STABILITY D E B B B B E E E E B A A B E
CEILING 14600 None None None 14900 None 19500 11400
STA PRES 28.77 28.81 28.79 28.90 28.94 28.95 28.87
Date 05/02Sun 05/03/26Mon 05/04/26Tue 05/05/26Wed 05/06/26
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 60 38 67 40 74 49 78 50 78
TEMP 55 56 44 41 62 60 44 45 70 68 54 53 75 70 56 55 74 72
DEWPT 45 39 33 32 31 33 34 34 41 46 46 48 48 48 48 49 51 53
RH 69 53 65 70 31 36 68 65 35 45 74 83 38 45 74 80 44 51
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 SC FW CL FW CL CL FW FW FW SC FW SC SC SC SC SC
POP 12HR 50 10 0 0 10 10 10 10 20
RAIN SHWRS SC SC IS
TSTMS 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