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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sun Apr 12 2026
VAZ024-130800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Sun Apr 12 2026
Date 04/12/26 Mon 04/13/26 Tue 04/14/26 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 60 84 57 89 61
TEMP 66 64 62 62 76 81 82 74 67 62 58 60 78 86 88 81 71 65 61 63
DEWPT 52 50 50 50 48 48 48 49 49 49 49 50 53 54 54 54 56 55 54 55
MIN/MAX RH 66 30 73 31 79
RH 61 60 65 65 37 32 31 41 52 62 72 69 42 34 31 39 59 70 78 75
WIND DIR S SW SW SW SW SW W SW SW W W W W SW SW SW SW W W W
WIND SPD 2 3 4 4 6 9 6 3 2 1 1 2 3 6 5 2 2 2 2 2
WIND GUST 13 14 14 20 20 18 16
CLOUDS SC B2 B2 B1 B1 B2 B1 SC FW FW SC SC SC SC SC FW FW SC SC SC
CLOUDS(%) 41 77 81 59 65 70 69 36 24 25 30 41 35 41 33 19 24 43 37 30
VSBY 10 10 10 10 10 7 10 10 6 10 10 10 10 10 10 10
POP 12HR 0 20 5 20 5
RAIN SHWRS IS IS
TSTMS IS
MIX HGT <1 <1 <1 1 4 7 4 <1 <1 <1 <1 <1 4 7 4 <1
T WIND DIR S S S S SW W SW W W W W W W SW SW S
T WIND SPD 3 3 2 5 20 24 12 6 3 2 2 2 10 13 13 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 1 8 81116 50 3 2 1 1 2 48102 69 3
MAX LVORI 3 3 3 3 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY F F E C C C C G G G G A A B A G
CEILING 5000 800 13200 None None None None None None
STA PRES 28.76 28.72 28.72 28.70 28.68 28.65 28.64 28.56
Date 04/15Thu 04/16/26Fri 04/17/26Sat 04/18/26Sun 04/19/26
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 93 62 92 62 90 61 93 63 86
TEMP 90 85 68 64 89 83 69 65 87 81 65 63 90 85 70 65 82 74
DEWPT 52 51 51 52 52 49 51 55 51 49 51 52 53 51 52 53 50 44
RH 27 31 54 65 28 31 53 70 29 33 60 67 28 31 53 65 33 34
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 SC SC SC SC FW FW SC SC B1 B1 B1 B1 B1
POP 12HR 0 0 5 20 20 0 10 20 30
RAIN SHWRS IS IS IS IS IS 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