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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
223 AM EDT Sun Apr 12 2026
VAZ024-130800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
223 AM EDT Sun Apr 12 2026
Date 04/11/26 Sun 04/12/26 Mon 04/13/26 Tue
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 49 80 59 87 58
TEMP 50 52 64 74 79 71 66 63 62 62 75 83 84 76 69 63 59 60
DEWPT 41 44 47 50 51 51 51 51 51 52 51 49 49 48 47 48 49 50
MIN/MAX RH 76 37 71 29 73
RH 71 74 54 43 38 49 58 65 67 70 43 31 30 37 45 58 69 69
WIND DIR NE E SE S S S S SW SW SW SW SW W SW SW W W W
WIND SPD 2 2 5 6 8 3 4 4 4 4 9 11 9 4 2 2 2 2
WIND GUST 19 21
CLOUDS SC SC SC SC SC FW SC B1 B2 B1 B1 B1 B1 B1 SC SC SC SC
CLOUDS(%) 27 50 41 32 40 23 34 65 78 57 60 65 65 53 27 27 33 35
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 5 5
MIX HGT <1 1 3 4 5 <1 <1 <1 <1 1 4 8 6 <1 <1 <1 <1 <1
T WIND DIR E SE S S S S SW S S SW SW W W W W W W W
T WIND SPD 5 10 13 10 11 6 3 3 5 6 17 25 23 9 4 2 2 1
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 3 15 59 50 64 3 2 2 4 10 64 91106 6 2 1 1 1
MAX LVORI 3 3 1 1 1 2 3 3 3 3 1 1 1 2 2 3 3 3
STABILITY G B A B B G F E E B C D C E G G G A
CEILING None None None None 800 13200 5400 None None
STA PRES 28.83 28.87 28.79 28.76 28.72 28.71 28.68 28.66 28.64
Date 04/14Wed 04/15/26Thu 04/16/26Fri 04/17/26Sat 04/18/26
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 90 60 93 63 93 64 90 61 93
TEMP 87 79 67 64 90 83 68 65 89 83 69 66 87 81 67 64 91 83
DEWPT 55 55 54 54 53 52 53 53 52 51 52 56 53 52 52 54 56 53
RH 34 44 63 70 28 34 59 65 28 33 55 70 31 37 59 70 31 36
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC SC B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 10 5 5 0 5 20 20 5 20
RAIN SHWRS IS IS 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