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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 PM EDT Thu Apr 2 2026
NCZ018-030800-
RAWS 311941
36.22N 81.63W Elev. 3254 ft
802 PM EDT Thu Apr 2 2026
Date 04/02/26 Fri 04/03/26 Sat 04/04/26 Sun
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 52 72 54 70 54
TEMP 59 55 52 53 64 70 70 64 60 56 55 55 65 70 68 63 60 58 57 55
DEWPT 53 50 49 50 54 54 53 53 53 53 54 55 58 58 57 56 55 56 56 55
MIN/MAX RH 89 55 99 65 100
RH 80 83 89 89 70 57 55 67 78 90 96100 78 66 68 78 84 93 96100
WIND DIR S S S S S S S S S S SW SW S S S S S S S SW
WIND SPD 5 5 3 2 5 8 6 2 2 2 2 2 6 12 12 6 5 6 8 8
WIND GUST 19 18 13 12 17 23 21 20 20 23 23
CLOUDS SC SC SC B1 SC SC B1 B1 B1 B1 SC B1 B1 B2 B2 SC SC B2 OV OV
CLOUDS(%) 32 45 35 55 31 31 59 53 57 51 46 51 62 80 80 50 50 81 90 92
VSBY 10 10 8 8 10 10 10 10 10 10 10 10 10 10 7 10
POP 12HR 10 20 10 40 70
RAIN SHWRS IS IS IS SC SC SC SC NM NM O
TSTMS IS IS
Obvis PF PF F
MIX HGT <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1 2 4 3 2
T WIND DIR S S S S SW SW S S S SW SW SW S S S S
T WIND SPD 24 19 14 12 12 4 8 10 5 8 5 8 8 10 14 13
DISPERSION PR PR VP VP VP VP VP PR PR PR PR
ADI 11 13 7 13 35 23 22 5 3 4 3 8 16 28 37 9
MAX LVORI 4 4 5 5 3 2 2 3 4 6 8 6 3 3 3 4
STABILITY F E G B B B D F F F F B D D D E
CEILING None None None None 700 None 400 800 300
STA PRES 27.10 27.12 27.15 27.11 27.13 27.11 27.11 27.04
Date 04/05Mon 04/06/26Tue 04/07/26Wed 04/08/26Thu 04/09/26
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 61 36 57 36 54 28 53 31 60
TEMP 58 52 42 38 55 49 40 38 52 46 32 30 51 46 36 34 58 52
DEWPT 51 40 33 31 28 28 30 31 27 24 22 21 24 24 24 26 30 33
RH 77 63 70 76 35 44 67 76 38 42 66 69 34 42 61 72 34 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 SC FW FW SC SC SC SC FW FW CL FW FW FW FW FW FW
POP 12HR 90 5 0 0 0 0 0 0 5
RAIN SHWRS O SC
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