Upper Air - METEOROLOGICAL DEPARTMENT ST. MAARTEN

78866 TNCM Juliana Airport Observations

Date Published: 12Z 24 Jan 2026

PRES	HGHT	TEMP	DWPT	RELH	MIXR	DRCT	SKNT	THTA	THTE	THTV
hPa	m	C	C	%	g/kg	deg	knot	K	K	K
1014.0	9	25.6	22.7	84	17.47	110	10	297.6	348.4	300.7
1004.0	97	25.2	20.2	74	15.08	110	12	298.0	342.0	300.7
1000.0	133	25.0	20.0	74	14.95	110	13	298.1	341.8	300.8
981.0	301	23.5	19.1	77	14.45	100	12	298.3	340.4	300.9
960.0	490	21.8	18.2	80	13.89	106	15	298.4	339.0	300.9
948.0	599	21.1	17.4	79	13.33	110	17	298.8	337.8	301.1
940.0	672	20.6	16.8	79	12.97	105	18	299.0	337.0	301.3
925.0	811	19.0	16.4	85	12.84	95	19	298.7	336.3	301.0
923.0	830	19.2	16.7	85	13.13	95	19	299.1	337.6	301.5
917.0	886	18.6	15.8	84	12.46	95	19	299.1	335.6	301.3
915.0	905	18.6	15.5	82	12.25	95	19	299.2	335.2	301.4
911.0	942	18.6	14.9	79	11.83	95	19	299.6	334.4	301.8
858.0	1456	16.2	12.3	78	10.58	91	18	302.3	333.9	304.2
850.0	1536	16.2	11.3	73	9.99	90	18	303.1	333.1	304.9
844.0	1596	16.0	10.0	68	9.21	89	17	303.5	331.3	305.2
827.0	1768	14.8	9.4	70	9.05	85	16	304.0	331.4	305.7
799.0	2060	12.8	8.5	75	8.79	85	15	304.9	331.5	306.5
795.0	2101	12.6	8.2	74	8.62	85	15	305.1	331.3	306.7
750.0	2586	10.1	4.0	66	6.87	95	8	307.5	328.8	308.8
700.0	3160	7.2	-0.8	57	5.18	75	9	310.4	326.9	311.4
655.0	3704	4.8	-8.5	38	3.09	65	13	313.6	323.8	314.2
641.0	3880	4.0	-11.0	33	2.59	49	11	314.7	323.4	315.2
638.0	3918	3.7	-11.1	33	2.58	45	10	314.8	323.4	315.3
616.0	4197	1.7	-11.8	36	2.52	70	8	315.6	324.1	316.1
534.0	5332	-6.7	-14.8	53	2.29	35	6	318.7	326.5	319.2
520.0	5543	-8.3	-15.3	57	2.25	72	4	319.3	326.9	319.7
519.0	5558	-8.1	-16.8	49	1.99	75	4	319.7	326.6	320.1
502.0	5819	-4.1	-43.1	3	0.17	48	8	327.6	328.3	327.6
500.0	5850	-4.3	-41.3	4	0.21	45	9	327.7	328.6	327.8
467.0	6385	-7.7	-36.7	8	0.35	31	14	330.0	331.4	330.0
434.0	6951	-12.7	-37.7	10	0.35	15	19	330.6	332.0	330.7
426.0	7093	-13.7	-38.7	10	0.32	11	21	331.1	332.4	331.1
424.0	7128	-13.9	-38.6	11	0.32	10	21	331.2	332.5	331.3
418.0	7237	-14.6	-38.1	12	0.34	0	21	331.8	333.1	331.8
415.0	7291	-14.9	-37.9	12	0.35	353	21	332.0	333.4	332.1
400.0	7570	-15.7	-44.7	6	0.18	315	23	334.5	335.2	334.5
395.0	7665	-16.3	-45.3	6	0.17	310	22	334.9	335.6	334.9
368.0	8188	-20.4	-45.1	9	0.19	280	19	336.2	337.0	336.3
341.0	8751	-24.9	-44.9	14	0.21	294	30	337.6	338.4	337.6
329.0	9009	-27.1	-46.6	14	0.18	300	35	338.1	338.8	338.1
316.0	9300	-29.5	-48.5	14	0.15	307	45	338.6	339.3	338.6
313.0	9368	-29.5	-50.5	11	0.12	308	47	339.5	340.1	339.6
306.0	9529	-29.3	-55.3	6	0.07	312	52	342.0	342.3	342.0
300.0	9670	-30.1	-53.1	9	0.09	315	57	342.8	343.2	342.9
265.0	10540	-38.1	-53.1	19	0.10	310	58	343.5	344.0	343.5
250.0	10940	-40.9	-57.9	14	0.06	305	54	345.1	345.4	345.1
246.0	11049	-41.3	-62.3	8	0.04	300	56	346.1	346.3	346.1
238.0	11269	-43.2	-61.7	11	0.04	290	60	346.5	346.7	346.5
231.0	11468	-45.0	-61.1	15	0.04	290	61	346.8	347.0	346.8
222.0	11733	-47.3	-60.3	21	0.05	290	58	347.2	347.4	347.2
211.0	12064	-50.3	-61.3	26	0.05	290	53	347.6	347.8	347.6
202.0	12346	-52.1	-66.1	17	0.03	290	50	349.1	349.2	349.1
200.0	12410	-52.5	-66.5	17	0.02	290	49	349.5	349.6	349.5
182.0	13013	-57.5	-69.5	20	0.02	304	57	350.9	351.0	350.9
181.0	13048	-57.7	-70.4	18	0.02	305	57	351.1	351.1	351.1
176.0	13224	-58.9	-74.9	11	0.01	308	56	352.0	352.0	352.0
153.0	14088	-65.6	-77.2	18	0.01	320	52	354.9	355.0	354.9
150.0	14210	-66.5	-77.5	20	0.01	320	50	355.3	355.4	355.3
149.0	14250	-66.7	-77.7	20	0.01	319	48	355.7	355.7	355.7
146.0	14373	-67.5	-78.5	20	0.01	314	44	356.4	356.4	356.4
140.0	14625	-69.1	-80.1	19	0.00	305	34	357.9	357.9	357.9
138.0	14710	-69.3	-80.3	19	0.00	302	31	359.0	359.0	359.0
137.0	14754	-69.2	-80.6	18	0.00	300	29	359.8	359.8	359.8
130.0	15067	-68.9	-82.9	12	0.00	325	30	365.9	365.9	365.9
129.0	15113	-69.1	-84.1	10	0.00	329	30	366.3	366.3	366.3
126.0	15253	-69.8	-84.1	11	0.00	340	30	367.6	367.6	367.6
120.0	15543	-71.1	-84.1	13	0.00	320	19	370.3	370.3	370.3
117.0	15689	-72.2	-84.9	13	0.00	310	14	371.0	371.1	371.0
107.0	16208	-75.9	-87.6	14	0.00	335	10	373.6	373.6	373.6
100.0	16600	-78.7	-89.7	15	0.00	270	3	375.4	375.4	375.4
92.0	17067	-80.6	-90.8	17	0.00	345	5	380.7	380.7	380.7
90.0	17189	-81.1	-91.0	18	0.00	25	3	382.1	382.1	382.1
85.0	17509	-82.4	-91.8	19	0.00	0	0	385.7	385.8	385.7
79.0	17919	-84.1	-92.7	21	0.00	350	9	390.4	390.4	390.4
75.0	18210	-85.3	-93.4	23	0.00	25	5	393.8	393.8	393.8
74.3	18262	-85.5	-93.5	23	0.00	40	5	394.4	394.4	394.4
73.3	18336	-85.5	-92.5	28	0.00	56	7	395.9	395.9	395.9
70.0	18590	-84.9	-91.9	29	0.00	110	15	402.4	402.4	402.4
67.0	18833	-82.3	-89.3	30	0.00	150	15	413.1	413.2	413.1
64.0	19090	-80.2	-87.9	27	0.00	165	4	423.2	423.3	423.2
63.0	19179	-79.5	-87.4	26	0.00	90	2	426.8	426.8	426.8
62.8	19196	-79.3	-87.3	26	0.00	92	2	427.5	427.5	427.5
59.7	19485	-77.5	-86.5	23	0.00	119	8	437.7	437.8	437.7
59.0	19553	-76.9	-86.8	20	0.00	125	9	440.5	440.5	440.5
56.0	19858	-74.5	-88.2	11	0.00	65	12	452.7	452.7	452.7
54.0	20071	-72.8	-89.1	7	0.00	110	21	461.4	461.4	461.4
52.0	20291	-71.0	-90.1	4	0.00	85	14	470.6	470.6	470.6
50.0	20520	-69.1	-91.1	3	0.00	105	14	480.2	480.3	480.2
48.0	20767	-68.2	-91.1	2	0.00	140	13	488.1	488.1	488.1
45.0	21157	-66.7	-91.1	2	0.00	55	5	500.8	500.9	500.8
43.0	21432	-65.6	-91.1	2	0.00	50	17	510.0	510.0	510.0
40.3	21824	-64.1	-91.1	1	0.00	65	13	523.3	523.3	523.3
36.7	22394	-65.9	-92.9	1	0.00	86	7	532.8	532.9	532.8
36.0	22513	-65.2	-92.4	1	0.00	90	6	537.7	537.7	537.7
32.0	23241	-60.6	-89.6	1	0.00	110	14	568.3	568.3	568.3
30.0	23640	-58.1	-88.1	1	0.01	70	18	585.7	585.7	585.7
29.3	23789	-57.9	-87.9	1	0.01	65	18	590.2	590.2	590.2
28.0	24076	-57.2	-87.2	1	0.01	55	18	599.7	599.8	599.7
26.2	24497	-56.3	-86.3	1	0.01	59	19	613.9	614.0	613.9
25.1	24769	-56.5	-86.5	1	0.01	62	20	620.9	621.0	620.9
22.4	25496	-54.3	-85.3	1	0.01	69	23	647.9	648.0	647.9
22.0	25611	-54.5	-85.4	1	0.01	70	23	650.6	650.7	650.6
20.0	26220	-55.7	-85.7	1	0.01	55	25	664.9	665.1	664.9
19.2	26480	-56.1	-86.1	1	0.01	55	20	671.5	671.6	671.5
18.0	26895	-54.7	-85.2	1	0.02	55	13	688.3	688.5	688.3
17.0	27263	-53.5	-84.4	1	0.02	60	27	703.5	703.7	703.5
15.0	28069	-50.9	-82.7	1	0.03	55	22	737.9	738.2	737.9
14.6	28243	-50.3	-82.3	1	0.03	59	20	745.6	745.9	745.6
14.3	28378	-51.1	-83.1	1	0.03	62	19	747.3	747.6	747.3
14.0						65	18

Station information and sounding indices

Station identifier	TNCM
Station number	78866
Observation time	260124/1200
Station latitude	18.05
Station longitude	-63.12
Station elevation	9.0
Showalter index	5.60
Lifted index	2.11
LIFT computed using virtual temperature	1.37
SWEAT index	180.61
K index	23.80
Cross totals index	15.60
Vertical totals index	20.50
Totals totals index	36.10
Convective Available Potential Energy	170.29
CAPE using virtual temperature	268.57
Convective Inhibition	-26.57
CINS using virtual temperature	-6.91
Equilibrum Level	508.56
Equilibrum Level using virtual temperature	506.43
Level of Free Convection	808.79
LFCT using virtual temperature	833.91
Bulk Richardson Number	58.23
Bulk Richardson Number using CAPV	91.83
Temp [K] of the Lifted Condensation Level	291.70
Pres [hPa] of the Lifted Condensation Level	926.02
Equivalent potential temp [K] of the LCL	341.15
Mean mixed layer potential temperature	298.19
Mean mixed layer mixing ratio	14.77
1000 hPa to 500 hPa thickness	5717.00
Precipitable water [mm] for entire sounding	39.33