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Archive: Jan 2009

Occluding cyclone over the Labrador Sea

AWIPS images of the GOES-12 6.5 µm water vapor channel data  with an overlay of polar-orbiting QuikSCAT winds (above) showed the a rapidly-occluding cyclone over the Labrador Sea on 07 January 2009. The classic “dry swirl” signature on the water vapor imagery is a tell-tale indicator that a mature cyclone has reached... Read More

The effect of stratus clouds on temperatures

AWIPS images of the  GOES-13 fog/stratus product (above) showed a patch of stratus cloud that developed quickly as it moved northeastward across southern Wisconsin during the pre-dawn hours on 06 January 2009. In advance of this cloud feature, air temperatures were dropping off as clear skies and light winds were promoting strong... Read More

Welcome back GOES-12

The GOES-12 satellite (which had experienced a thruster anomaly back on 14 December 2008) was re-activated on the morning of 05 January 2009 (beginning at 15:15 UTC). A comparison of GOES-13 and GOES-12 visible images (above) centered on Tampa, Florida showed that the GOES-12 image... Read More