EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Wakefield VA
510 PM EDT Tue Apr 16 2024
VAZ081-170800-
James River NWR RAWS-Prince George VA
37.25N 77.25W Elev. 50 ft
510 PM EDT Tue Apr 16 2024
Date 04/16/24 Wed 04/17/24 Thu 04/18/24 Fri
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 53 78 63 83 53
TEMP 65 59 56 54 57 69 75 77 72 68 66 64 66 76 81 81 71 63 59 56 56
DEWPT 41 40 40 45 50 57 58 58 59 59 57 55 57 57 54 54 57 56 52 50 49
MAX/MIN RH 74 50 74 37 83
RH 41 48 55 71 77 66 55 52 64 72 73 74 72 53 39 39 61 78 78 80 77
WIND DIR SE SE SE SE S S S S S SW SW SW W W NW NW NE E NE NE E
WIND DIR DEG 12 13 15 14 16 18 20 18 17 20 20 23 25 28 30 31 06 07 06 06 07
WIND SPD 4 3 4 3 3 3 6 5 5 9 6 5 4 6 8 5 4 5 4 4 6
CLOUDS SC SC SC B1 B2 B2 OV B2 B2 B1 SC SC FW FW FW FW FW SC SC B1 B1
CLOUDS(%) 29 38 48 64 80 85 90 85 80 64 48 33 18 19 19 18 17 30 44 56 68
VSBY 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7 7
POP 12HR 10 20 30 10 5
QPF 12HR 0 0 0.02 0 0
SNOW 12HR 00-00 00-00 00-00
RAIN SHWRS S S C C
TSTMS S S
LAL 1 1 1 2 2 1 1 1 1 1
HAINES 4 3 4 5 4 4 4 4 4 4
MIX HGT 500 700 2800 2700 600 800 7100 7400 500 1900
T WIND DIR SE SE S S S SW NW NW NE NE
T WIND SPD 9 4 6 6 11 9 14 10 11 8
SMOKE DISP PR PR PR PR PR PR GD GD PR PR
ADI 6 5 24 25 13 12 104 81 7 17
MAX LVORI 2 4 3 3 4 4 1 3 4 5
STABILITY F F C B D F B B F E
CEILING 30000 13800 4000 10800 8900 4700 30000 4700 4700 3200
PRESSURE 30.07 30.07 30.03 29.92 29.86 29.82 29.87 29.84 29.90 29.95
Date 04/19Sat 04/20/24Sun 04/21/24Mon 04/22/24Tue 04/23/24
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 74 54 73 47 64 44 65 44 71
TEMP 72 67 58 57 71 63 52 50 62 56 48 48 63 57 48 49 68 63
DEWPT 53 55 54 52 46 44 39 39 39 42 41 41 39 42 42 43 44 46
MIN/MAX RH 52 93 37 69 41 82 40 90 38
RH 52 65 86 84 41 50 61 66 43 59 77 77 41 58 81 81 42 53
WIND DIR SE E S N NW N NE N N NE NE NE NE E NE NW SW S
WIND SPD 6 4 2 3 10 5 3 4 9 5 4 3 9 6 5 5 8 8
AVG CLOUDS B1 B1 B1 B1 SC B1 B1 B1 B2 B2 B2 B1 B1 B1 B1 SC SC SC
POP 12HR 30 40 20 20 30 30 20 20 10
RAIN SHWRS C C S S S S C C S S S S
TSTMS S
$$
EXPERIMENTAL ONLY...THIS PRODUCT IS FOR PLANNING AND REVIEW PURPOSES ONLY AND
IS NOT TO BE SUBSTITUTED FOR AN OFFICIAL FIRE WEATHER SPOT
FORECAST.
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 HUMIDITY
RH(%)...............................RELATIVE HUMIDITY
WIND DIR(8 POINT COMPASS)...........20 FT. WIND DIRECTION
WIND DIR DEG(DEGREES)...............20 FT. WIND DIRECTION IN TENS OF DEGREES
RELATIVE TO DUE NORTH.
EXAMPLE: 09 = 90 DEGREES = EAST; 18 = 180 DEGREES = SOUTH;
27 = 270 DEGREES = WEST; 36 = 360 DEGREES = NORTH
WIND SPD(MPH).......................20 FT. WIND SPEED
WIND GUST(MPH)......................20 FT. WIND GUST
WIND CHILL..........................WIND CHILL TEMPERATURE
HEAT INDX...........................HEAT INDEX
CLOUDS(CAT).........................CLOUD COVER CATEGORY
EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED;
B1 = MOSTLY CLOUDY; B2 = CONSIDERABLE CLOUDS; OV = OVERCAST
CLOUDS(%)...........................CLOUD COVER AS A PERCENTAGE
VSBY................................VISIBILITY VALUE IN STATUTE MILES
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION
QPF 12HR(IN)........................LIQUID EQUIVALENT PRECIPITATION AMOUNT
WEATHER...
TYPE...
RAIN...........RAIN
RAIN SHWRS.....RAIN SHOWERS
TSTMS..........THUNDERSTORMS
DRIZZLE........DRIZZLE
SNOW...........SNOW
SNOWSHWRS......SNOW SHOWERS
SLEET..........SLEET
FLURRIES.......FLURRIES
FRZG RAIN......FREEZING RAIN
FRZG DRZL......FREEZING DRIZZLE
COVERAGE...
S..............SLIGHT CHANCE
C..............CHANCE
L..............LIKELY
O..............OCCASIONAL
D..............DEFINITE
AR.............AREAS
PA.............PATCHY
OBVIS...............................OBSTRUCTION TO VISIBILITY
TYPE...
F..............FOG
PF.............PATCHY FOG
F+.............DENSE FOG
H..............HAZE
BS.............BLOWING SNOW
K..............SMOKE
BD.............BLOWING DUST
AF.............VOLCANIC ASHFALL
LAL(CAT)............................LIGHTNING ACTIVITY LEVEL
HAINES(CAT).........................HAINES INDEX
MIX HGT(FT AGL).....................MIXING HEIGHT
T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION
T WIND SPD(MPH).....................TRANSPORT WIND SPEED
SMOKE DISPERSION....................SMOKE DISPERSION CATEGORY
VALUES: VP = VERY POOR; PR = POOR; FR = FAIR; GD = GOOD
ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX
CEILING (FT)........................CEILING
PRESSURE (INCHES MERCURY)...........STATION PRESSURE
MAX LVORI (INDEX)...................LOW VISIBILITY OCCURRENCE RISK INDEX
STABILITY (CAT).....................PASQUILL TURNER STABILITY
WATCH/WARNING/ADVISORY...
EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH
IN EFFECT FOR THE INDICATED HOUR
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 DIR............................20 FT. WIND DIRECTION
WIND SPD(MPH).......................20 FT. WIND SPEED
AVG CLOUDS(CAT).....................AVERAGE CLOUD COVER CATEGORY
POP 12HR(%).........................PROBABILITY FOR ACCUMULATING PRECIPITATION
WEATHER...
SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS