Storm Prediction Center Mesoscale Discussion 1303
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Mesoscale Discussion 1303 | |
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Mesoscale Discussion 1303 NWS Storm Prediction Center Norman OK 0344 PM CDT Sun Jun 15 2025 Areas affected...Southeast Colorado into eastern New Mexico and far West Texas Concerning...Severe potential...Watch possible Valid 152044Z - 152245Z Probability of Watch Issuance...40 percent SUMMARY...Large hail and severe wind gusts are possible with storms that move off the terrain into southeast Colorado and eastern New Mexico. A watch is not expected in the short term, but trends will be monitored into the evening where a more organized wind threat could evolve farther east. DISCUSSION...Convection has developed from the Sangre de Cristo into the southern Rockies this afternoon as moderately moist (mid 50s F dewpoints) upslope flow has persisted over the last few hours. To the east, a modifying outflow boundary from an earlier MCS in the southern Plains has entered eastern New Mexico and should eventually reach the terrain. While this outflow is slightly cooler, low 60s F dewpoints have promoted 2000-2500 J/kg MLCAPE with weaker inhibition. The expectation is for storms to eventually move off the terrain as MLCIN is eroded in the next hour or two. Modestly enhanced northwesterlies aloft on the western flank of the MCV atop southeasterly surface winds supports 35-45 kts of effective shear (stronger in the north and weaker south). Steep mid-level lapse rates and strong shear should allow initial supercells to produce large hail (up to 2.5 inches) as well as severe winds. Some model guidance has suggested clustering is possible in northeast New Mexico where stronger shear and greater buoyancy will overlap. With only a weak low-level jet response in the Texas Panhandle/South Plains this evening, it is not clear how far east such a cluster/small MCS could propagate. A greater wind threat would exist if this occurs. Overall, storm coverage should remain isolated at least into early evening and a watch is not currently expected. Trends in convective evolution will need to be monitored into this evening, however. ..Wendt/Thompson.. 06/15/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LUB...AMA...MAF...PUB...ABQ...EPZ... LAT...LON 37080518 37160518 37820464 37840304 37220263 33450295 32800294 32160368 32130488 32780497 35000510 37080518 MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.50-2.50 IN |
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2025-06-15 21:00:03