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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1201 AM EDT Fri May 1 2026
VAZ046-020800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1201 AM EDT Fri May 1 2026
Date 04/30/26 Fri 05/01/26 Sat 05/02/26 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 42 70 48 60 40
TEMP 47 43 47 59 66 70 62 57 53 50 48 55 57 59 55 48 45 41 43
DEWPT 36 35 37 36 36 37 40 42 43 42 41 42 42 43 42 42 39 35 35
MIN/MAX RH 76 29 78 56 83
RH 65 73 68 42 33 30 44 57 69 74 77 61 57 55 61 80 79 79 73
WIND DIR N NE NE S S SW SW SW N N N NE NE NE NE NW NW NW NW
WIND SPD 2 1 1 4 6 9 4 4 3 4 4 5 5 5 4 4 5 5 5
CLOUDS SC FW B1 SC FW SC B1 B2 B2 B2 OV OV OV B2 B2 B1 SC FW FW
CLOUDS(%) 40 25 51 31 16 36 69 79 83 87 89 91 89 81 73 62 41 23 10
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 30 60 30
RAIN SHWRS SC SC SC SC NM NM SC SC
MIX HGT <1 <1 <1 4 6 7 <1 <1 <1 <1 1 3 4 4 <1
T WIND DIR N NW NW S S SW S SW N N N N N SE S
T WIND SPD 3 2 2 1 9 13 4 1 12 12 12 5 3 4 3
DISPERSION VP VP VP VP VP VP VP VP PR PR
ADI 2 1 2 6 63 99 3 1 6 8 21 19 13 17 2
MAX LVORI 3 5 3 2 1 1 2 3 3 4 3 2 2 2 3
STABILITY G G A A A B E E F E C C C C E
CEILING None None None 15400 10400 700 900 5500
STA PRES 29.29 29.30 29.20 29.24 29.28 29.29 29.23
Date 05/03Mon 05/04/26Tue 05/05/26Wed 05/06/26Thu 05/07/26
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 66 40 75 53 81 59 79 57 76
TEMP 62 59 44 45 72 69 59 55 78 74 63 60 75 73 63 59 74 66
DEWPT 31 33 32 35 41 44 45 47 48 48 51 54 57 56 56 55 53 44
RH 31 37 62 68 33 40 60 74 35 40 65 81 54 55 78 87 48 45
WIND SPD <15 <15 <15 <15 <15 <15 15> <15 <15
AVG CLOUDS FW CL CL CL FW FW FW FW FW FW B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR 5 0 5 5 10 20 40 50 50
RAIN SHWRS IS SC SC SC SC SC SC
TSTMS 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