CASE 34 - Isolated cell to the N of S-Pol

8/19/04

Microphysical scans 2000 - 2100 Z, 1h

 

 

SYNOPTIC CONDITIONS SUMMARY:

 

Day 0 forecast discussion text

 

Winds

200 mb - model.ETA.200408191200.06_200mb_wnd.gif

500 mb - model.ETA.200408191200.06_500mb_wnd.gif

700 mb - model.ETA.200408191200.06_700mb_wnd.gif

850 mb - model.ETA.200408191200.06_850mb_wnd.gif

 

Mazatlan SkewT - ops.SkewT.200408200000.Mazatlan_MX.gif

 

 

MESOSCALE SUMMARY: Isolated cell developed to the N.

 

1954Z, GOES-10 Vis

 

24 h precipitation totals -

 

S-POL SUMMARY:

 

S-Pol log - spol_081904.txt

 

SCAN OVERVIEW:

 

1930 Z

Cell at 70km NNW of S-Pol is continuing to grow. Cell now has +50dBz reflectivities.Looks to be moving southest, so will keep an eye on it. Jean reports that we can see it visually from the radar site.

 

1930Z, Base reflectivity

 

2000 Z

Begin Microphysical Scanning, Switching to MicroNear90: Centered on the the isolated cell at 330 deg. Dropping unnecessary 26.4 deg scan to keep timing OK.

 

2000Z, Base reflectivity

 

2015 Z

Switching to MicroFar90: MicroNear was a bit much. Storm is weakening a bit I'd say.

 

2015Z, Base reflectivity

 

2030 Z

Rotating next PPI to 60 deg to cover new development near 70 deg and edcge of scope. Original storm perishing quickly, and this new cell has up to 60 dBZ.

 

2030Z, Base reflectivity

 

2100 Z

End Microphysical Scanning, Switching to ClimoFar: Storms moving westward, not eastward, today. There is some convection moving in from over the high terrain. The PPIs were scanning the lading edge of this stuff. So far, this day looks reasonably promising.