Author Archives: Ed_Szoke

Determining clouds from snow – an example from 5 Dec 2013

As winter continues to settle in across the nation and snow cover increases, an issue that arises is trying to see cloud cover over a snow pack during the daytime with visible satellite imagery, since both appear white.  Certainly looping … Continue reading

Posted in MODIS Snow/Cloud Discriminator | Leave a comment

Synthetic imagery for the 3 Dec 2013 fog/low cloud case

The previous blog entry discussed CIRA satellite imagery that can be useful in highlighting fog and low clouds.  These images utilize existing satellite imagery to create images that try to replicate those that will be available in the GOES-R era. … Continue reading

Posted in Synthetic NSSL WRF-ARW Imagery | Leave a comment

Widespread Fog East of the Rockies – 3 Dec 2013

Widespread fog and low clouds covered much of the nation east of the Rockies 0n the morning of 3 Dec in the moist airmass ahead of the developing western storm and strong cold front that has since pushed south.  Dense … Continue reading

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ORI product for 18-20 December 2010 massive California rain event

A period of extremely heavy rain and massive higher elevation snow hit California and other portions of the West during mid-December 2010.  Here we take a look at the ORI product for a portion of this storm, concentrating on Central … Continue reading

Posted in Orographic Rain Index (ORI) | Leave a comment

Low cloud/fog example from Boulder WFO case from AWIPS on 9 December 2010

GeoColor and Low cloud/Fog GOES-R Proving Ground imagery from CIRA has been available at the Boulder WFO for several years.  After feedback from the forecasters, recently GeoColor imagery without the city lights was added.  This example shows both types of … Continue reading

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Cloud over snow example on 30 November 2011 from Buffalo WFO using MODIS imagery

Buffalo WFO SOO David Zaff collected this imagery from one of the forecasters, Robert Hamilton, who sent him the following message: “I found it very interesting to see snow cover on the basic IR imagery late this afternoon, so I have attached both the IR … Continue reading

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Synthetic IR imagery showing fog/low clouds from BOU WFO on 8 November 2011

This example from the Boulder WFO shows the use of synthetic IR imagery generated from the 4-km horizontal grid resolution NSSL WRF model for predicting an area of fog and low clouds near the Denver International Airport (DIA) on the … Continue reading

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Low cloud/fog early detection over Lake Erie on 16 March 2011 from WFO BUF

Sent to the BUF SOO by forecaster Kirk Apffel The new CIRA stratus/fog IR satellite worked well late afternoon/evening.  It clearly showed low stratus and fog developing on Lake Erie, which was hardly visible on other products. It was useful … Continue reading

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Comparison of CIRA Dust Products for 27 Feb 2011 Eastern NM/West TX dust storm

Summary: (comments are given for each time) -Widespread blowing dust behind a strong dry line pushing across the western half of Texas -Compared the two CIRA dust products with AWIPS visible imagery for 3 times on 27 Feb 2011 -Also … Continue reading

Posted in Blowing Dust (Blue-light absorption technique) | 1 Comment