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Monitoring of concurrent, co-located tornado and flash flood (TORFF) warnings

Below is the most recent image showing overlapping tornado and flash flood warning polygons thus far in 2019. Warnings are shown if they overlap in space and are valid within 30 minutes of one another, calculated as described in Nielsen et al. (2015, Weather and Forecasting). The images are updated once per day at approximately 1045 UTC. The images are zoomed in on the region where overlapping TORFF warnings are most frequently observed.

Images last updated 1130 UTC Thursday February 21 2019. (click image to embiggen)

The ten most recent TORFF overlapping warnings in 2019 are:

JAN issued TOR warning at: 201902201438 and FF warning at: 201902201501
IND issued TOR warning at: 201902071737 and FF warning at: 201902071732
IND issued TOR warning at: 201902071653 and FF warning at: 201902071636
OHX issued TOR warning at: 201902070158 and FF warning at: 201902070145
OHX issued TOR warning at: 201902070119 and FF warning at: 201902070145
OHX issued TOR warning at: 201902070119 and FF warning at: 201902070114
NA issued NA warning at: NA and NA warning at: NA
NA issued NA warning at: NA and NA warning at: NA
NA issued NA warning at: NA and NA warning at: NA
NA issued NA warning at: NA and NA warning at: NA

Download the text file with the details of this year's overlapping warnings.


Maps of overlapping warnings from previous years:

Year:

RT_2018_map_current.png

All TORFF Warning Intersections (n=3843) from 2008-2018:

TORFF_WI_2008_to_2018.png

TORFF Warning Intersections for Select U.S. Tropical Cyclones:

Select a Storm:

Harvey_TORFF_WI_All_BT.png

This research is sponsored by NOAA grant NA15OAR4590233, in support of the 2016 VORTEX-SE field campaign.

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