Case Overview

Launch at 14:00Z and 14:45Z on March 17th 2015. Temps in the high 30's with winds coming from the North. There were a few Light/Moderate PIREPS reported throughout the event of interest. In the lowest 2 km of the atmosphere we are seeing a large spike in the liquid content. The Integrated Liquid water content is almost off the charts. Before the period, we had a very low cloud base, with a secondary cloud base of ~4km. When this upper level dissipates, we see the jump in Integrated Liquid Water. The sondes that were launched hit a SLW max (more to come when data is received from NASA Glenn)

Synoptic Overview:

Weather Prediction Center 15:00Z Surface Analysis:

Weather Prediction Center Frontal / Radar Composite:

Weather Prediction Center Infra-red / Frontal Analysis:

Cleveland NASA Obs:

Date Time Wind Obs Cloud ecover Ta Td RH P(Hg) P(mb)

17	10:53	N 18	10.00	Overcast	BKN028 OVC033	34	27			76%	23	NA	30.11	1019.8	Sonde launch hour
17	09:53	N 20	10.00	Overcast	BKN018 BKN022 OVC027	35	30			82%	24	NA	30.07	1018.3
17	08:53	W 12	10.00	Overcast	OVC019	36	33			89%	28	NA	30.00	1016.1
17	07:53	NA	10.00	Overcast	BKN021 OVC045	35	32	54	35	89%	NA	NA	29.95	1014.3
17	06:53	Calm	10.00	Overcast	OVC044	36	32			86%	NA	NA	29.90	1012.8
17	05:53	NW 6	10.00	Mostly Cloudy	FEW028 BKN037	35	33			93%	30	NA	29.86	1011.3

PIREPs

PIREPS:

1426598700 41.26 -80.68 40 22 8 -9 -9 -9 -9 -9 -9 -1 -99 -99 40 40 -1 -9 40 40 -9 -9 40 40 -9 -9 -9 40 40 -9 -9 -9 B350 YNG UA /OV YNG/TM 1325/FL040/TP B350/SK OVC022-TOPUNKN/TA M01/IC NEG/RM AWC-WEBFAA.YNG
1426600200 40.87 -83.03 220 -9 -9 -9 -9 -9 -9 -9 -9 -27 -99 -99 220 220 3 1 220 220 -9 -9 220 220 -9 -9 -9 220 220 -9 -9 -9 E145 MFD UA /OV MFD270020/TM 1350/FL220/TP E145/TA M27/IC LGT RIME/RM DURGC FL220-240
1426600800 41.26 -80.68 18 18 8 -9 -9 -9 -9 -9 -9 -99 -99 -99 18 18 -1 -9 18 18 -9 -9 18 18 -9 -9 -9 18 18 -9 -9 -9 UNKN YNG UA /OV YNG/TM 1400/FL018/TP UNKN/SK OVC018/TB INTMT/IC NEG/RM GAIN AND LOSS OF 10 KT BLO 18 MSL AWC-WEBFAA.YNG
1426602180 41.29 -81.70 56 -9 -9 -9 -9 -9 -9 -9 -9 -5 -99 -99 52 60 3 2 56 56 -9 -9 56 56 -9 -9 -9 56 56 -9 -9 -9 E145 CLE UA /OV CLE135010 /TM 1423 /FLUNKN /TP E145 /TA M05 /IC LGT CLR 052-060
1426602240 41.11 -81.64 240 -9 -9 -9 -9 -9 -9 -9 -9 -27 -99 -99 240 240 3 1 240 240 -9 -9 240 240 2 -9 3 240 240 -9 -9 -9 B739 AKR UA /OV ACO270020/TM 1424/FL240/TP B739/TA M27/TB CONT LGT TURB/IC LGT RIME
1426605600 40.98 -81.37 40 -9 -9 -9 -9 -9 -9 -9 -9   0 -99 -99 40 40 3 1 40 40 -9 -9 40 40 -9 -9 -9 40 40 -9 -9 -9 B712 CAK UA /OV KCAK040005/TM 1520/FL040/TP B712/TA 00/IC LGT RIME 040/RM AWC-WEBFAA.CAK
1426606320 41.26 -80.68 50 28 4 58 -9 -9 -9 -9 -9   0 -99 -99 28 58 3 1 50 50 -9 -9 50 50 2 -9 -9 50 50 -9 -9 -9 C135 YNG UA /OV YNG /TM 1532 /FL050 /TP C135 /SK BKN028-TOP058 /TA 00 /TB LGT /IC LGT RIME 028-058 /RM DURD
1426607520 41.24 -81.85 40 -9 -9 -9 -9 -9 -9 -9 -9   0 -99 -99 40 40 5 1 40 40 -9 -9 40 40 -9 -9 -9 40 40 -9 -9 -9 B712 CLE UA /OV CLE180010 /TM 1552 /FL040 /TP B712 /TA 00 /IC MOD RIME