-
Potential challenges of interpreting water vapor imagery: A tropical moisture case over San Diego on 21 Sep 2016
While water vapor imagery is no doubt very useful for forecasting, it can at times be tricky to interpret. This blog discusses a particularly challenging case over Southern California on 21 September 2016, when deep tropical moisture produced a rain event for San Diego. Even though the environment was very moist, indeed the precipitable water (PW) […]
-
Challenging forecast for Colorado mountains snow event of 5 December 2016
On 5 December 2016, a significant storm was approaching the mountains of Colorado with various NWS winter weather watches/warnings posted for 6 December. This snow event on 5 December occurred ahead of the storm in what looked like drying conditions behind a fast moving shortwave. The GOES satellite imagery seemed to support the idea of drying […]
-
1-minute imagery of warm conveyor belt on 1-2 February 2016 winter storm
A winter storm that passed through Colorado on 1-2 February 2016 resulted in significant snowfall over northern / northeast Colorado: One of the key aspects of this extra-tropical cyclone was the development of a warm conveyor belt (Harrold 1973). The 4-km NSSL WRF-ARW synthetic water vapor imagery from the 0000 UTC 1 February run […]
-
Himawari imagery of 924 mb low in the Pacific
At 0600 UTC 13 December 2015, the NOAA Ocean Prediction Center analyzed a 924 mb surface low in the north Pacific in the vicinity of the western Aleutian islands: The analyzed minimum central pressure of 924 mb ties the record for lowest pressure in the north Pacific during the period of record (since the winter […]
-
Himawari-8 True Color / Geocolor product
CIRA now provides Himawari-8 daytime true color imagery and nighttime geocolor imagery: http://rammb.cira.colostate.edu/templates/loop_directory.asp?data_folder=training/visit/loops/12nov15_tc_gc&number_of_images_to_display=70 The example above begins at 0230 UTC 12 November 2015 with most of the scene in daylight, therefore true color imagery is shown. The CIRA Hybrid Atmospherically Corrected (HAC) method is applied to produce this “true color” imagery. The Hybrid Atmospherically Corrected […]
-
GOES-14 SRSOR 1-minute visible imagery for 19 May 2015 over Texas
GOES-14 will be in Super Rapid Scan Operations for GOES-R (SRSOR) mode between 18 May – 12 June, 2015. This special mode allows for 1-minute temporal imagery for GOES, similar to what will be available when GOES-R becomes available in 2016. We will discuss the 1-minute imagery over Texas on 19 May, 2015. First, we […]
-
Synthetic imagery from the 4-km NSSL WRF-ARW model for the 22 April 2015 severe weather event
This blog entry consists of a youtube video: http://youtu.be/2-3xVFXdw-o
-
10 November 2014 Colorado Dust Storm Matched to Aircraft Photo
By Steve Miller (CIRA) This blog entry is in Powerpoint show format, click on the link below to view the Powerpoint show: Powerpoint show file
-
Leeside cold front of 10 November 2014: Blowing dust and deep-tropospheric gravity waves
A strong cold front pushed southward across the Plains during the day on November 10, 2014. The temperature gradient across the front was quite dramatic, as seen by the surface observations at 23:00 UTC: Visible imagery from GOES-East during the afternoon hours centered over Colorado clearly showed the southward progress of the cold front as […]
-
Convective Initiation Application via the Split Window Difference product
One of the exciting new products that will be available on GOES-R is the split window difference (SWD) which is simply the difference between the 10.35 micron and 12.3 micrometer channels. This channel difference has been shown to provide information about atmospheric column water vapor. Higher SWD values (larger positive difference) can correspond to deepener […]
Recent Posts
Recent Comments
People are concerned about snowboarding when they should be worried about the water supply in general. We’re using it an…
An excellent and very thorough analysis of this high-impact blowing dust event. Additional satellite images (including GOES visible animations) are…
I’ve been looking at DNB (and brightness temperature difference) over the PAC NW the past couple days: https://fusedfog.ssec.wisc.edu/?p=886 Great time…
Ed, Yes, I had noticed this the other day also…good that you caught it and posted! These dust events over…
Excellent analysis of this event. As a supplement, we have GOES-15 and Himawari-8 water vapor imagery of the storm posted…