2/22/2012 @ KCLE
02:04 UTC -
WX Scenario:
Weak convection behind an occluded front
Discussion:
Intermitant drizzle at the surface (meteogram) around the PIREP time shows up as patches of high S-band and Ka-band REFL. Significant radiometer ILW and NIRSS icing hazard values associated with this airmass. Polarized IHL shows cohesive patches of SLW= 'yes icing' within the radar volume. The single-pol IHL did not detect SLW.
PIREP: 'B732 CLE UA /OV CLE180015 /TM 0204 /FL100 /TP B732 /TA 01 /IC MOD'
IHL 3.0 and 0.5 degree plots
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NIRSS
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NIRSS Ka-band Vertical Profile
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NEXRAD
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No PING data for this date and time
22:33 UTC -
WX Scenario:
Later on the same day, a low develops over the central Ohio Valley. At the PIREP time, the low is very near or just west of KCLE, and light drizzle at the surface reforms.
Discussion:
NIRSS only detects light IFI severity for this case, but the PIREP was from 35-40 km NW over Lake Erie. The dual Pol IHL detected widely scattered, small, cellular SLW-'yes icing' features over land, but saw a larger patch of positive SLW in a northerly direction over the lake at the PIREP time. The modified single-pol SLW algorithm does fairly well in this case at calling out SLW similar to that detected by the dual-pol SLW algorithm in this case.
PIREP: 'CL3 BKL UA /OV DJB040030/TM 2234/FL135/TP CL3/TA M16/IC MDT RIME/RM DURGD 135-085
IHL 3.0 and 0.5 degree plots
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NIRSS
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NIRSS Ka-band Vertical Profile
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NEXRAD and Meteogram
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Google Maps distance between KCLE and PIREP location 35km
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No PING data for this date and time