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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
328 AM EDT Sun Mar 22 2026
NCZ006-222000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
328 AM EDT Sun Mar 22 2026
Date Sun 03/22/26 Mon 03/23/26 Tue 03/24/26
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 87 64 76 39 58
TEMP 57 57 74 85 87 80 73 69 66 65 73 74 73 61 53 48 42 39 48 55 58 52
DEWPT 54 54 58 54 53 55 55 55 55 56 56 48 36 30 28 27 27 26 25 23 23 25
MAX/MIN RH 31 74 26 58 25
RH 90 90 57 35 31 42 53 61 68 73 55 40 26 31 38 44 55 59 40 29 26 35
WIND DIR SW W W SW SW SW SW SW SW W NW N N N N N NE NE NE E E E
WIND SPD 2 2 3 5 8 4 5 5 5 5 9 10 10 6 5 4 4 4 4 3 3 1
WIND GUST 20 20
CLOUDS FW SC FW FW FW SC FW FW SC B1 B1 SC FW FW FW SC SC SC SC B1 SC FW
CLOUDS(%) 14 40 15 12 17 30 16 12 50 65 53 33 12 7 15 30 33 35 41 51 31 19
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 0 0
MIX HGT <1 <1 2 5 7 <1 <1 <1 <1 <1 4 5 4 <1 <1 <1 1 2 3 4 4 <1
T WIND DIR S SW SW W SW SW SW SW SW W N N N N NE NE NE NE NE NE E E
T WIND SPD 3 3 3 13 19 8 10 9 6 4 14 18 19 10 10 16 12 17 11 8 6 8
DISPERSION VP VP PR PR PR PR PR VP VP VP
ADI 2 4 7 86144 4 5 4 5 5 40 74 76 5 5 7 6 38 44 30 34 4
MAX LVORI 7 6 3 1 1 2 2 3 3 3 1 1 1 2 2 2 2 1 1 2 1 2
STABILITY G B B B B F F F E D D C C F F F F B B C B G
CEILING None None None None None None None None None None
STA PRES 29.24 29.15 29.12 29.12 29.22 29.36 29.57 29.67 29.73 29.67
Date Wed 03/25/26Thu 03/26/26Fri 03/27/26Sat 03/28/26
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 38 69 49 77 59 77 40 58
TEMP 42 40 66 63 54 51 73 73 65 61 74 64 48 41 54 51
DEWPT 28 32 36 40 43 47 53 52 54 54 52 41 36 32 28 28
RH 57 73 33 43 66 86 49 48 68 78 46 43 63 70 36 41
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC B1 B1 B1 SC SC FW B1 B1 B2 B2 B2 B1 SC
POP 12HR 5 5 20 20 20 30 50 20
RAIN SHWRS IS IS IS SC SC SC IS 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