This shows a 48 hour period from 1800 UTC, March 01 to 1800 UTC March 03, 2007 when there was a low pressure system over the central US. Each frame of this video shows reported gusts exceeding 25 mph and less than 55 mph. The wind speed and direction are shown by standard wind barbs and in addition the colors of the barbs represent wind gust. So the red barbs are in the 45 - 55 mph range. Each frame represents a 2 hour period on the MADIS Mesonet Map. The counter clockwise circulation around the low pressure system is clearly evident.
The video shows the MADIS stations received each two hour interval from the time Katrina was upgraded to Category 4 to about 36 hours after landfall. Each frame is shown for 0.5 seconds and represents two hours of real time. In the upper left, k2806 means Katrina, Aug 28, 06 UTC. The indicated color is related to temperature as coldest color 50F and warmest color 100F.
The station on the right with very large winds is bad data from an Army Corps of Engineers station on Dauphne Island. The purple line that appears about halfway through the sequence is the track of Katrina and appears whenever Katrina is over land. The stations remaining after landfall close to the track are mostly RAWS stations.
shows the gust as measured by MADIS stations in Oklahoma and surrounding states during the 48 hour period encompassing UTC hours of March 11 and 12. There are 48 frames each representing the MADIS gust data between 10 to 75 mph. Each frame is shown for 0.5 seconds so the total viewing time is 24 seconds and then it repeats. The colors of the wind barbs relate to gust with the "warmer" colors implying higher gust.
During the last half of this two day period, there were large wild fires in Texas and the winds spread these fires. During this same time, there were also tornado outbreaks in Missouri and the displayed high winds in Oklahoma played a factor in this severe weather. It is important to note that if a station reported gust less than 10 mph for a given hour, that station is not plotted for that hour in this video.
This shows the 24 hour period of UTC March 26, 2006 for the Denver-Boulder, CO area. The runways of Denver International Airport are shown in the lower right and runways for other smaller local airports are also shown. The local time is 5:00 PM March 25 through 5:00 PM March 26. One frame shows the temperature, dew point and winds from one of the CWOP stations (KB0TVJ-5); to stop on this or any of the frames, press the -Y´PauseĦ key and to restart, press it again. Each of the map frames represents one hour of real-time and 24 map frames are displayed, each for 0.7 seconds.
On this evening, fog formed as indicated on the temperature, dew point chart and the maps indicate where I estimate the local visibility due to fog was 100-200 meters during an early Sunday morning hike. The station below the fog indicator is the station that measured the data shown in the graphs. Shortly after I returned from the hike, the wind came up suddenly and rapidly cleared and dried the whole area.
The station near the bottom center of the map is a Colorado Dept. of Transportation station (Thornton Parkway) which is showing questionable wind direction.
This video shows the average winds reported by MADIS as Hurricane Ernesto made landfall on the North Carolina coast during the evening of August 31, 2006. Each frame represents two hours from 0600 UTC August 31 to 1600 UTC September 1, 2006.