National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EST Wed Jan 29 2025

VAZ020-300900-
RAWS 441801
37.99N  79.76W Elev. 2160 ft
301 PM EST Wed Jan 29 2025

Date           01/29/25      Thu 01/30/25            Fri 01/31/25            Sat
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EST 3hrly     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07

MIN/MAX TEMP                 29          50          41          51          39
TEMP          50 41 35 32 29 30 36 47 50 44 43 42 42 42 43 47 49 50 48 46 44 40
DEWPT         23 21 21 19 20 19 23 25 28 27 34 37 38 39 41 44 45 42 40 39 37 33
MIN/MAX RH                   66          41          91          73          87
RH            34 44 56 58 69 63 59 42 42 51 70 82 86 89 93 89 86 74 74 76 76 76
WIND DIR      NW NW NW NW  W  W SW SW  S  S  S  S  S  S  S SW SW  W  W  W NW NW
WIND SPD      25 24 20 14  8  2  1  2  3  3  2  2  2  2  2  2  3  4  5  5  4  3
WIND GUST     37 34                                              17 18 17 16   
CLOUDS        CL FW FW FW FW FW SC FW SC OV OV OV OV OV OV OV B2 B1 B1 B1 B1 SC
CLOUDS(%)      0  6  9  8  8  7 32 22 37 92 99 93 93 93 92 92 74 64 61 54 61 31
VSBY          10 10 10 10 10 10 10 10 10  7  6  6  6  6  6  6  6  6  7 10 10   
POP 12HR                      0          20          90          90          40
RAIN                                      C  D  D  D  D                        
RAIN SHWRS                                               O  O NM SC IS         
LAL                                                                            
HAINES                                                                         
MIX HGT        3 <1 <1 <1 <1 <1  1  2  1 <1 <1 <1 <1 <1 <1 <1 <1 <1            
T WIND DIR     W  W NW NW NW SW SW SW  S  S SW  E SE NW  S  S SW  W            
T WIND SPD    37 14 14 11  9  3  5  9  9  3  5  1  1  2  3  8  8 12            
DISPERSION       GD GD GD PR             VP VP VP VP             VP PR PR VP   
ADI           88 13 13 10  6  4 11 21 17  2  3  1  1  2  3  6  6  8            
MAX LVORI      1  2  2  2  3  3  2  2  2  2  3  6  6  6  6  5  4  3            
STABILITY      D  D  D  D  E  B  A  B  B  F  F  F  F  B  C  C  C  E            
CEILING              None  None  None  None  2200  2400  4600   300  1800      
STA PRES            27.78 27.88 28.00 27.94 27.90 27.75 27.65 27.55            


Date           02/01Sun 02/02/25Mon 02/03/25Tue 02/04/25Wed 02/05/25
UTC 6hrly     18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly     13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19

MAX/MIN TEMP       50      32      45      39      60      38      53      34      49
TEMP          49 41 36 33 42 41 40 40 58 50 45 39 51 43 37 35 47 44
DEWPT         26 25 26 25 26 30 32 35 40 37 36 32 32 30 28 28 33 33
RH            40 52 67 72 53 65 73 82 51 61 70 76 48 60 70 75 58 65
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW SC SC B1 B1 B1 B1 SC SC B1 SC SC FW SC SC B1 B1
POP 12HR            0       0       0       0       0       5       5       5      10

$$


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
LAL(CATEGORY).......................Lightning Activity Level
HAINES(CATEGORY)....................Haines Index
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