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St. Francis National Forest Fire Weather Point Forecast Matrix
ARZ049-032200-
MARIANNA NFDRS SITE-LEE AR
34.76N 90.72W ELEV. 253 FT
433 AM CST SUN MAR 3 2013
DATE SUN 03/03/13 MON 03/04/13 TUE 03/05/13
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 48 35 64 51 55
TEMP 23 31 41 48 44 36 35 35 35 43 55 64 59 51 51 51 51 54 55 55 52
DEWPT 19 21 20 22 25 28 28 30 32 37 41 45 46 48 48 49 47 43 38 34 29
MIN/MAX RH 34 95 47 100 40
RH 86 67 44 34 48 73 81 81 88 77 60 50 62 90100 94 88 65 49 44 40
WIND DIR N S SW S S SE SE SE SE S S S S S S SW W W W W W
WIND SPD 1 2 4 5 4 4 5 6 9 16 17 16 10 9 9 8 10 14 18 17 13
CLOUDS CL SC B1 B1 B2 B1 SC SC B1 B1 B2 B2 OV OV OV OV B2 B2 B1 B1 SC
CLOUDS(%) 2 28 52 58 70 60 49 49 62 62 70 70 90 90 90 90 85 85 65 65 46
POP 12HR 0 0 30 60 30
QPF 12HR 0 0 0.05 0.20 0.02
RAIN C C C C
RAIN SHWRS SC SC SC SC NM NM NM NM
TSTMS SC SC SC SC
MIXHGT M AGL 1032 1104 0 0 894 1301 656 465 1637 1853
MIXHGT FT AGL 3385 3623 0 0 2932 4268 2151 1525 5371 6080
MIXHGT M MSL 1110 1182 56 61 972 1379 734 543 1715 1931
MIXHGT FT MSL 3641 3879 183 201 3188 4524 2407 1781 5627 6336
TRANSWIND DIR W SW S S S S S W NW NW
TWIND SPD M/S 2 3 4 5 12 15 9 7 10 12
TWIND SPD MPH 4 8 9 12 27 35 21 17 24 27
VENT INDEX 3546 410 19306 8586 21241
CATEGORY DAY 2 1 5 4 5
500M MIXHGT T 37 47 50 58 59 62 64 59 49 54
500M TWND DIR SW SW S S S S SW W NW NW
500M TWND M/S 2 4 11 15 16 14 15 10 9 11
500M TWND MPH 4 9 25 34 36 33 34 24 21 25
DISPERSION 19 22 7 13 85 100 53 37 71 80
LAL 1 1 1 1 1 3 3 3 1 1
LASI 4 3 3 4 4 3 3 3 3 4
STABILITY B C E F D D D D D D
STAG INDEX 3 0 0 0 0
DATE WED 03/06/13 THU 03/07/13 FRI 03/08/13 SAT 03/09/13
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 33 48 31 54 37 63 43 65
TEMP 44 33 45 45 37 31 48 50 41 37 58 58 48 43 60 60
DEWPT 28 26 28 30 29 28 31 33 33 33 36 39 40 41 43 45
MAX/MIN RH 78 47 91 42 88 38 94 47
RH 53 77 51 56 71 89 50 53 74 87 45 49 75 93 55 59
WIND DIR NW NW N NE SE S S SW
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 TEMPERATURE
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 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...
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
MIXING HGT M (AGL)..................MIXING HEIGHT IN METERS
MIXING HGT FT (AGL).................MIXING HEIGHT IN FEET
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
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
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