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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
402 PM EDT Sun Apr 5 2026
NCZ005-060800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
402 PM EDT Sun Apr 5 2026
Date 04/05/26 Mon 04/06/26 Tue 04/07/26 Wed
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 42 68 45 65 37
TEMP 64 61 54 50 44 43 54 64 67 62 53 50 47 46 58 63 64 57 49 44 40 38
DEWPT 56 48 40 37 34 32 32 32 32 34 34 35 35 35 34 31 25 25 24 24 23 22
MIN/MAX RH 83 27 69 23 54
RH 75 62 59 61 68 65 43 30 27 35 48 56 63 65 40 30 22 29 37 45 50 52
WIND DIR W NW NW NW NW NW NW W W W W W NW NW N N N NE NE NE NE NE
WIND SPD 8 6 8 5 5 5 5 4 5 3 3 4 4 5 8 8 6 4 5 5 5 6
CLOUDS B2 SC SC SC FW FW SC FW FW SC SC SC SC SC FW FW FW FW FW FW FW FW
CLOUDS(%) 71 44 36 39 20 16 29 18 24 29 39 39 30 26 19 13 11 10 7 19 14 15
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 2 <1 <1 <1 <1 <1 3 5 8 <1 <1 <1 <1 <1 4 6 7 <1
T WIND DIR W NW NW N N N NW NW W W W W N N N N N NE
T WIND SPD 16 9 10 12 8 13 8 10 14 4 3 3 4 8 10 8 6 6
DISPERSION PR PR PR PR VP VP VP VP VP PR PR PR
ADI 44 6 7 6 4 16 29 65133 2 2 2 2 8 54 55 50 3
MAX LVORI 3 3 3 3 3 3 2 1 1 2 2 3 3 3 1 1 1 2
STABILITY C E E F F A A A A G G F F A B B B F
CEILING None None None None None None None None None
STA PRES 29.34 29.41 29.47 29.38 29.42 29.50 29.60 29.60
Date 04/08Thu 04/09/26Fri 04/10/26Sat 04/11/26Sun 04/12/26
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 37 69 47 76 50 83 55 84
TEMP 58 56 43 39 65 62 52 49 73 69 55 54 81 74 61 57 81 76
DEWPT 24 29 31 33 41 42 46 47 48 45 47 49 51 49 50 51 52 50
RH 27 35 62 79 41 48 80 93 41 42 74 83 35 41 67 80 37 40
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 B1 B1 SC SC FW SC FW FW SC SC FW FW SC FW FW
POP 12HR 0 5 5 10 10 5 5 5 5
$$
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