CASE 9 - Organized
cellular activity to N & SE
Microphysical scans 0815 - 1200 Z, 3h
45m
SYNOPTIC CONDITIONS SUMMARY:
Synoptic
feature map -
IOP status - No IOP called at this time. NW-SE oriented ridge
axis elongated further during period. Dry-line boundary
present parallel to west coast of An MCS formed in the
region of weak inertial stability / 250 mb jet later in this period (near
12Z).
Day
0 forecast discussion text
Winds
200
mb - model.ETA.200407191200.00_200mb_wnd.gif
500
mb - model.ETA.200407191200.00_500mb_wnd.gif
700
mb - model.ETA.200407191200.00_700mb_wnd.gif
850
mb - model.ETA.200407191200.00_850mb_wnd.gif
EVENT SUMMARY:
24
h precipitation totals -
S-POL SUMMARY: Scattered deep cells over the SMO to the N and E/SE of S-Pol. Storms
exhibited more organization today than usual. They have a preferred E-W
orientation and ~40 km spacing.
S-Pol
log - spol_071904.txt
SCAN
OVERVIEW:
|
0815
Z |
Begin Microphysical Scanning,
Switched to MicroNear90: Cells to
the N producing lots of lightning. 0815Z, Base reflectivity
|
|
0825
Z |
3 scans / 15 min over NOAA profiler: Moderate rain over NOAA profiler. Translating
sector CCW to stay with storms to the N. 0830Z, Base reflectivity
0830, Reflectivity Cross Section - Intense cell N of S-Pol. Generally, cells were intense (55+ dBZ) and deep (17 km)
0830, ZDR Cross Section - Intense cell N of S-Pol
|
|
0852
Z |
Storms
developing close to S-Pol (<10 km N). Storms appear shallow. |
|
0923
Z |
Translating
sector CW to center on with <10km storms. By 0933 Z, target storms are
dying. 0930Z, Base reflectivity
|
|
0944
Z |
Re-centering
sector to capture intense storms to the E. |
|
1000
Z |
Storms
to the E looking organized, assuming an E-W orientation w/ ~40 km spacing. 1000Z, Base reflectivity
|
|
1019
Z |
Large
storm developing to SE - not contained in current sector scans. Large storm
enters sector scans ~1040 Z. 1015Z, Base reflectivity
|
|
1100
Z |
Switching to MicroFar135: Lighting visible from S-Pol at 1121 Z. 1100Z, Base reflectivity
|
|
1200
Z |
End Microphysical Scanning, Switched
to ClimoFar: Radar left
unattended. |
