| 2308z (6:08pm CDT) Tornadic circulation begins developing in the storm. | |||||
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 REF |
 SRV1 |
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| 2313z (6:13pm CDT) Pronounced circulation as tornado forms on the ground. | |||||
 REF |
 SRV1 |
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| AT 6:14 PM CDT...STORM SPOTTERS AND DOPPLER RADAR OBSERVED A TORNADO. THIS TORNADO WAS LOCATED JUST SOUTH OF RICHLAND HILLS OR NEAR LOOP 820 EAST AND I-30...MOVING NORTHEAST AT 30 MPH. | |||||
| 2317z (6:17pm CDT) | |||||
 REF |
 SRV1 |
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| AT 620 PM CDT...STORM SPOTTERS AND DOPPLER RADAR OBSERVED A TORNADO. THIS TORNADO WAS LOCATED NEAR HURST...RICHLAND HILLS...AND SOUTHERN HALTOM CITY...AND WAS MOVING NORTHEAST AT 30 MPH. | |||||
| 2322z (6:22pm CDT) | |||||
 REF |
 SRV1 |
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| AT 638 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE MONITORING A SEVERE THUNDERSTORM WITH A HISTORY OF PRODUCING ONE OR MORE TORNADOES. STRONG ROTATION IS LOCATED OVER IRVING...MOVING EAST AT 40 MPH. | |||||
| 2342z (6:42pm CDT) Strong rotation directly over Downtown Dallas. Notice the zoomed out image where the boundary out ahead of the main line arcs back into the tornadic storm. | |||||
 REF |
 REF ZOOM OUT |
 SRV1 |
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| 2347z (6:47pm CDT) Rotation appears to weaken a tad, but the downtown skyscrapers are directly between the rotation and the data site. I wonder if this partially blocks/scatters the radar beam as you can see in the velocity images above. Or it could be there is no precip there to return data. I dunno. | |||||
 REF |
 SRV1 |
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| 2351z (6:51pm CDT) Some wierd stuff going in the velocity image south of I-30 out along the edge of the storm. I believe this to be a rapidly developing new tornadic circulation that we see in the following frames. But, the main tornadic circulation is still along I-30 just east of downtown. Thank goodness this wasn't a tornado churning along I-30 tossing around the thousands of cars stuck in rush hour traffic. | |||||
 REF |
 SRV1 |
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| AT 652 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE MONITORING A SEVERE THUNDERSTORM WITH A HISTORY OF PRODUCING ONE OR MORE TORNADOES. STRONG ROTATION WAS LOCATED NEAR AND JUST EAST OF DOWNTOWN DALLAS....MOVING EAST AT 35 MPH ALONG I-30. | |||||
| AT 655 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS AND DOPPLER RADAR OBSERVED A DEVELOPING TORNADO 13 MILES WEST OF HEATH...OR ABOUT NEAR GARLAND...MOVING EAST AT 40 MPH. | |||||
| 2356z (6:56pm CDT) Now the new large circulation is quite apparent approaching northern Mesquite. The strong outbound return (bright red) is perhaps a very strong RFD blast. So, we have two different circulations with the old one just north of I-30. Occlusion and new tornadogenesis? | |||||
 SRV1 (click here for smoothed version) |
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| 0001z (7:01pm CDT) Now the older circulation intensifies as the new one dissipates....but not before a funnel cloud is reported with it at about this time over northern Mesquite where you see the smaller couplet. Could it have been anticyclonic? The couplet certainly would suggest that. Very interesting. | |||||
 REF |
 SRV1 |
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| AT 704 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE MONITORING A SEVERE THUNDERSTORM WITH A HISTORY OF PRODUCING ONE OR MORE TORNADOES. TRAINED WEATHER SPOTTERS ARE REPORTING A FUNNEL CLOUD WITH THIS STORM NEAR THE NORTHERN PART OF THE CITY OF MESQUITE | |||||
| 0006z (7:06pm CDT) The main circulation along I-30 intensifies while a couple of circulations are indicated down across I-20 both cyclonic and anticyclonic...quite possibly the nise of strong RFD which would explain the upcoming sequence of events. The storm starts to transition into a "comma head" tornadic supercell. | |||||
 REF |
 SRV1 |
 SRV1 Smoothed |
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| 0011z (7:11pm CDT) | |||||
 REF |
 SRV1 |
 SRV1 Smoothed |
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| AT 713 PM CDT...STORM SPOTTERS AND DOPPLER RADAR OBSERVED A TORNADO NEAR SUNNYVALE OR NEAR ROWLETT...MOVING NORTHEAST AT 40 MPH. | |||||
| 0016z (7:11pm CDT) | |||||
 REF |
 SRV1 |
 SRV1 Smoothed |
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| 0021z (7:11pm CDT) The "comma head" echo starts to take shape. | |||||
 REF |
 SRV2 |
 SRV3 |
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| 0030z (7:30pm CDT) One of th most interesting radar images I've seen. The "comma head" is now quite apparent along I-30. this storm is spinning like a top....esepcially with the SRV2 image. Notice the boundary curling out of it. | |||||
 REF |
 SRV2 |
 SRV2 Smoothed |
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| 0035z (7:35pm CDT) One of th most interesting radar images I've seen. The "comma head" is now quite apparent along I-30. this storm is spinning like a top....esepcially with the SRV2 image. Notice the boundary curling out of it. | |||||
 REF |
 SRV1 Smoothed |
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| 0040z (7:40pm CDT) | |||||
 REF |
 SRV1 Smoothed |
 SRV2 Smoothed |
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| AT 750 PM CDT...STORM SPOTTERS AND DOPPLER RADAR OBSERVED STRONG ROTATION NEAR QUINLAN...OR ABOUT 14 MILES NORTHEAST OF TERRELL...MOVING NORTHEAST AT 35 MPH. | |||||
| 0056z (7:56pm CDT) | |||||
 REF |
 SRV1 Smoothed |
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| AT 757 PM CDT...A SEVERE THUNDERSTORM WITH A HISTORY OF PRODUCING AT LEAST ONE TORNADO WAS NEAR QUINLAN...OR ABOUT 9 MILES SOUTH OF GREENVILLE...MOVING NORTHEAST AT 40 MPH. | |||||
| 0105z (8:05pm CDT) | |||||
 REF |
 SRV1 Smoothed |
 SRV2 Smoothed |
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| AT 828 PM CDT...STORM SPOTTERS REPORTED A VISIBLE FUNNEL CLOUD NEAR HIGHWAY 69 SOUTHEAST OF GREENVILLE. | |||||