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Mesoscale Discussion 751 |
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Mesoscale Discussion 0751
NWS Storm Prediction Center Norman OK
0925 PM CDT Thu May 08 2025
Areas affected...Central SC into eastern NC
Concerning...Severe potential...Watch unlikely
Valid 090225Z - 090330Z
Probability of Watch Issuance...20 percent
SUMMARY...Thunderstorms may increase in coverage late this evening
across parts of SC/NC. A watch is not currently anticipated, but
trends are being monitored.
DISCUSSION...A relatively slow-moving but mature MCS is tracking
eastward across central NC. The outflow boundary associated with
this convection has proceeded out ahead of the updrafts, suggesting
a slow weakening will occur. Nevertheless, mesoscale organization
may continue to result in gusty winds along the line for another 1-2
hours.
The surface outflow boundary extends southwestward into northern SC.
Southeasterly low-level winds to the south of the boundary will
maintain a moist and unstable air mass in this region, where
relatively steep mid-level lapse rates are present. Most CAM
guidance suggests that thunderstorms will increase in coverage along
the outflow boundary during the next couple of hours. Given the
unstable conditions and favorable deep-layer shear profiles, there
will remain some severe threat through the early morning period.
However, it is unclear whether this threat will warrant a new severe
thunderstorm watch, given continued diurnal cooling. Trends will be
monitored.
..Hart/Smith.. 05/09/2025
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MHX...RAH...ILM...CAE...GSP...FFC...
LAT...LON 34498216 34808034 35277945 35937901 35807826 34987804
34047857 33567952 33448110 33558263 34268320 34498216
MOST PROBABLE PEAK TORNADO INTENSITY...UP TO 95 MPH
MOST PROBABLE PEAK WIND GUST...55-70 MPH
MOST PROBABLE PEAK HAIL SIZE...UP TO 1.25 IN
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