First Use of GREMLIN in Warning Scenario

My first time experimenting with GREMLIN, I was able to utilize it briefly during a warning scenario.  Using the 4-panel (Figure 1) below in conjunction with radar data (KFDX), I issued a Severe Thunderstorm Warning for 60 mph winds (Figure 2).  Other than the fact this storm previously had warnings, the velocity/SRM signature was decent (certainly no slam dunk) for straight-line winds, but the uptick in GREMLIN Meso-1 combined with the increase in cloud top cooling south of Fort Sumner. Figure 3 shows a 3 minute difference showing the rapid uptick in the GREMLIN radar emulation. The CONUS radar emulation did show it, but in a warning scenario was a bit too delayed to use with any confidence to issue a warning based on its data.  It certainly helped solidify the decision after issuing the warning.

Figure 1: East Meso Sector GREMLIN and Channel 13 (left side), MRMS composite reflectivity and East CONUS GREMLIN (right side).

Figure 2: Severe Thunderstorm Warning in southeast portion of ABQ CWA.

Figure 3: The radar emulation from East Meso-sector 1 (top left) shows a nice uptick within 3 minutes with the storm south of Fort Sumner and from the previous loop from Figure 1, it continues for several more minutes. Thus, added confidence to issue a warning by 21:21z.

– Podium

Tags: None