CASE 16 - Cells to the
SE propagate towards S-Pol, organize into bow-shaped convective line w/
enhanced flow behind it
Microphysical scans 0430 - 0730 Z, 3h
SYNOPTIC CONDITIONS SUMMARY:
Synoptic
feature map -
IOP status - No IOP
called a this time. Low-level (700 mb)
moisture prevalent in much of Tier 1 domain, including S-Pol region. Small jet has formed
between cyclonic circulation off the east coast of Mexico and 500 mb
anticyclone to the NW - jet is bring moisture into Tier 1 from Gulf of
Mexico. Tropical Wave #28
tracking westward, will be due S of Mazatlan (at 10 deg N) in the next day
or two.
Day
0 forecast discussion text
Winds
200
mb - model.ETA.200408020000.06_200mb_wnd.gif
500
mb - model.ETA.200408020000.06_500mb_wnd.gif
700
mb - model.ETA.200408020000.06_700mb_wnd.gif
850
mb - model.ETA.200408020000.06_850mb_wnd.gif
EVENT SUMMARY: Cells formed to the SE of S-Pol, propagated towards the NW into the
S-Pol domain. Cells organized into a bow-shaped convective line, located to the
E/NE of S-Pol, at ~0530 Z. By 0700 Z, convection was dissipating.
0539Z, GOES-10 Thermal IR
24
h precipitation totals -
S-POL SUMMARY:
SCAN
OVERVIEW:
|
0232
Z |
Mesoscale
system propagating into S-Pol domain from the SE. 0230Z, Base reflectivity
|
|
0300
Z |
SE
quadrant filling up with storms. 0300Z, Base reflectivity
|
|
0430
Z |
Begin Microphysical Scanning,
Switching to MicroNear135:
Centered sectors on 90 deg. Strongest storms due E at ~40-60 km, moving to
the NW. 0430Z, Base reflectivity
|
|
0500
- 0600 Z |
Some
new cell growth observed, but overall intensity was waning. At 0530 Z, a bow-shaped
emerged from 45-90 deg at 120-150 km range. 0530Z, Base reflectivity
|
|
0619
Z |
Easterly
flow enhanced behind the bow-shaped convective line to the E/NE as it moves westward. 0615Z, Base reflectivity
0615Z, Base radial velocity
|
|
0745
Z |
End Microphysical Scanning, Stopping radar:
Switched to ClimoNear at 0748 Z. |
