National Weather Service United States Department of Commerce

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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Sat Apr 26 2025

VAZ018-270800-
RAWS 444002
37.56N  80.18W Elev. 2702 ft
131 AM EDT Sat Apr 26 2025

Date           04/25/25      Sat 04/26/25            Sun 04/27/25            Mon
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          73          43          72          44
TEMP                   61 60 61 67 72 72 62 54 50 46 45 58 68 72 63 53 48 44 46
DEWPT                  57 56 57 59 58 54 48 42 38 34 32 33 32 32 33 33 33 33 35
MIN/MAX RH                   98          54          66          24          67
RH                     87 87 87 75 61 53 60 64 63 63 60 39 26 23 32 46 56 65 65
WIND DIR               SW  W  W  W NW NW NW NW NW NW NW NW NW NW NW NW NW  N  E
WIND SPD                5  6  8  9 11 16 10  8  6  6  6  6  6  5  3  2  1  1  1
WIND GUST              20 23 24 25 26 28 31 27 25 26 26 23 18 17 16            
CLOUDS                 OV OV B2 B1 B1 SC SC FW FW SC SC SC FW FW FW FW FW FW FW
CLOUDS(%)              95 98 86 63 51 30 35 12 18 34 44 33 21 14 20 17 22 23 14
VSBY                    7  7  7  8 10 10 10 10 10 10 10                        
POP 12HR                     60          30           5           0           0
RAIN SHWRS             IS SC SC SC                                             
TSTMS                                                                          
MIX HGT                <1 <1 <1  3  4  4  2  1 <1 <1  1  3  4  5 <1            
T WIND DIR             SW SW  W  W NW NW NW NW NW NW NW  N  N  N NW            
T WIND SPD              6  5 10 12 26 26 24 24 20 13 13 12 12  9  4            
DISPERSION             PR PR             FR PR PR PR             VP VP VP VP   
ADI                     6  4 11 37136 94 16 16  9  6 22 43 64 55  2            
MAX LVORI               4  6  4  3  1  1  2  2  3  3  2  1  1  1  2            
STABILITY               D  E  C  C  B  C  E  E  F  F  B  B  B  A  G            
CEILING                     700  1100  None  None  None  None  None  None      
STA PRES                  27.72 27.73 27.76 27.87 27.91 27.96 27.93            


Date           04/28Tue 04/29/25Wed 04/30/25Thu 05/01/25Fri 05/02/25
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       77      53      85      63      83      61      81      63      79
TEMP          73 68 57 58 84 73 66 66 83 71 63 63 80 70 65 65 79 67
DEWPT         40 44 45 48 56 55 56 57 58 55 54 54 55 55 55 57 55 50
RH            30 42 64 69 38 53 70 73 43 57 72 72 42 59 70 75 44 54
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC
POP 12HR            0       0      20      20      40      20      50      50      50
RAIN SHWRS                   IS IS IS IS SC IS    SC SC SC SC SC SC
TSTMS                           IS       SC IS       SC          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