228
FOUS54 KMEG 080923
PFWMEG
FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE MEMPHIS TN
323 AM CST THU DEC 8 2022
MSZ002-082200-
WINBORN NFDRS SITE-MARSHALL MS
34.69N 89.30W ELEV. 500 FT
323 AM CST THU DEC 8 2022
DATE THU 12/08/22 FRI 12/09/22 SAT 12/10/22
UTC 3HRLY 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
CST 3HRLY 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18
MAX/MIN TEMP 69 59 67 49 65
TEMP 64 67 69 68 65 63 63 62 62 64 65 66 60 54 51 49 51 56 63 64 60
DEWPT 64 66 66 64 64 63 63 62 62 63 61 57 56 52 51 49 51 55 58 59 59
MAX/MIN RH 87 100 73 100 84
RH 100 97 90 87 97100100100100 97 87 73 87 93100100100 96 84 84 96
WIND DIR SW SW W W W NW SE S SW W W NW N N NE E E S S SW SW
WIND SPD 3 5 8 4 3 3 2 3 3 4 5 5 2 2 1 2 2 5 6 5 2
CLOUDS OV OV B2 B2 B2 B2 OV OV OV OV B2 B1 B1 B1 B1 B2 B2 OV OV B2 OV
CLOUDS(%) 92 93 85 81 80 87 90 94 96 97 78 66 57 59 65 74 83 90 90 87 88
POP 12HR 50 80 40 5 60
QPF 12HR 0.05 0.38 0.02 0 0.19
RAIN SHWRS SC SC SC SC IS IS SC O SC SC SC SC NM NM SC
TSTMS SC IS IS IS IS IS
T WIND DIR S W SW SW W SW SW W SW W W NW NW N E NE E E E E E
T WIND SPD 8 10 10 5 3 3 3 3 11 6 4 3 4 3 2 4 5 11 21 14 10
MIXHGT M AGL 322 309 40 111 306 389 140 125 714 639
MIXHGT FT AGL 1058 1013 131 364 1004 1275 458 410 2342 2097
MIXHGT M MSL 444 431 162 233 428 511 262 247 836 761
MIXHGT FT MSL 1458 1413 531 764 1404 1675 858 811 2742 2497
TRANSWIND DIR SW SW SW SW W NW N NE E E
TWIND SPD M/S 4 2 1 3 2 2 1 2 6 6
TWIND SPD MPH 10 5 3 6 5 4 3 4 13 14
VENT INDEX 1776 466 1022 524 5016
CATEGORY DAY 1 1 1 1 3
500M MIXHGT T 69 70 68 68 66 64 62 64 68 68
500M TWND DIR SW SW SW SW W W N S SW SW
500M TWND M/S 8 4 2 5 5 2 1 1 7 7
500M TWND MPH 18 10 5 12 11 5 2 3 16 16
DISPERSION 19 6 3 10 9 3 3 5 49 14
LAL 3 1 1 2 2 1 1 1 2 2
LASI 3 3 3 3 3 4 4 4 3 3
STABILITY C C D D C C F E C C
STAG INDEX 3 3 3 3 3
DATE SUN 12/11/22 MON 12/12/22 TUE 12/13/22 WED 12/14/22
UTC 6HRLY 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
CST 6HRLY 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18
MIN/MAX TEMP 46 59 39 60 47 64 50 60
TEMP 55 47 56 52 44 40 57 52 47 51 62 61 57 51 58 54
DEWPT 55 47 48 48 44 40 45 47 46 49 56 57 57 51 49 46
RH 100 100 74 86100 100 64 83 96 93 81 87100 100 72 74
WIND DIR NW N NE E SE SE S S
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 SC FW SC SC SC B1 B2 OV OV OV B2 B1 B1
POP 12HR 50 5 5 10 30 70 80 50
RAIN SHWRS SC IS SC SC NM O NM SC SC
TSTMS IS IS
BELOW IS A WEATHER ELEMENT KEY FOR THIS PRODUCT
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 SPD (MPH)......................20 FT. WIND SPEED
WIND CHILL (F)......................WIND CHILL
HEAT INDEX (F)......................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
POP 12HR (%)........................PROBABILITY FOR ACCUMULATING PRECIPITATION
QPF 12HR (IN).......................LIQUID EQUIVALENT PRECIPITATON 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...
IS.............ISOLATED
SC.............SCATTERED
NM.............NUMEROUS
O..............OCCASIONAL
S..............SLIGHT CHANCE
C..............CHANCE
L..............LIKELY
WD.............WIDESPREAD
D..............DEFINITE
AR.............AREAS
PA.............PATCHY
OBVIS...............................OBSTRUCTION TO VISIBILITY
TYPE...
F..............FOG
PF.............PATCHY FOG
+PF............PATCHY DENSE FOG
F+.............DENSE FOG
H..............HAZE
BS.............BLOWING SNOW
K..............SMOKE
BD.............BLOWING DUST
MIXHGT M AGL........................MIXING HEIGHT IN METERS ABOVE GROUND LEVEL
MIXHGT FT AGL.......................MIXING HEIGHT IN FEET ABOVE GROUND LEVEL
MIXHGT M MSL........................MIXING HEIGHT IN METERS MEAN SEA LEVEL
MIXHGT FT MSL.......................MIXING HEIGHT IN FEET MEAN SEA LEVEL
TRANSWIND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION
TWIND SPD MS (M/S)..................TRANSPORT WIND SPEED IN METERS PER SECOND
TWIND SPD MPH (MPH).................TRANSPORT WIND SPEED IN MILES PER HOUR
VENT INDEX (M2/S)...................VENT INDEX IN METERS SQUARED PER SECOND
CATEGORY DAY........................CATEGORY DAY BASED ON VENT INDEX
EXAMPLE: 1 = <2000; 2 = >=2000 AND <4000; 3 = >=4000 AND <8000;
4 = >=8000 AND <16000; 5 = >=16000
500M MIXHGT T (F)...................SURFACE TEMPERATURE NEEDED TO CREATE MIXING
UP TO 500 METERS ABOVE THE GROUND
500M TWND DIR (8 POINT COMPASS).....TRANSPORT WIND DIRECTION AT 500 METERS AGL
500M TWND M/S.......................TRANSPORT WIND AT 500 METERS AGL IN M/S
500M TWND MPH.......................TRANSPORT WIND AT 500 METERS AGL IN MPH
DISPERSION..........................DISPERSION INDEX FOR SMOKE DISPERSION
EXAMPLE: 1-6 = VERY POOR; 7-12 = POOR; 13-20 = GENERALLY POOR
21-40 = FAIR; 41-60 = GENERALLY GOOD; 61-100 = GOOD
101+ = EXCELLENT
LAL.................................LIGHTNING ACTIVITY LEVEL
EXAMPLE: 1 = NO THUNDERSTORMS; 2 = ISOLATED THUNDERSTORMS
3 = WIDELY SCATTERED THUNDERSTORMS; 4 = SCATTERED THUNDERSTORMS
5 = NUMEROUS THUNDERSTORMS; 6 = DRY LIGHTNING WITH NO RAIN
LASI (SAME AS HAINES INDEX).........LOWER ATMOSPHERIC SEVERITY INDEX
MEASURES FIRE GROWTH POTENTIAL
EXAMPLE: 1-3 = VERY LOW; 4 = LOW; 5 = MODERATE; 6 = HIGH
STABILITY...........................STABILITY CLASS
EXAMPLE: A = VERY UNSTABLE; B = MODERATELY UNSTABLE; C = SLIGHTLY UNSTABLE
D = NEUTRAL; E = SLIGHTLY STABLE; F = MODERATELY STABLE
G = VERY STABLE
STAG INDEX..........................STAGNATION INDEX
EXAMPLE: 0 = WINDS >= 10 MPH; 1 = WINDS <= 10 MPH WITH RAIN
2 = DRY WITH DECENT WINDS
3 = DRY WITH LIGHT WINDS AND STAGNATE CONDITIONS
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 (8 POINT COMPASS)..........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
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