Mesoscale Discussion 0940
NWS Storm Prediction Center Norman OK
0718 PM CDT Sat Jun 01 2019
Areas affected...Far east central Missouri including the western St.
Louis metro area.
Concerning...Severe Thunderstorm Watch 307...
Valid 020018Z - 020115Z
The severe weather threat for Severe Thunderstorm Watch 307
continues.
SUMMARY...A cluster of storms is moving south toward St. Louis with
an increasing damaging wind threat.
DISCUSSION...A cluster of supercells in Lincoln and Calhoun counties
has started to congeal with an area of strong inbound velocities
noted from KLSX in the RFD region of the easternmost supercell. This
may be the beginning stages of a developing bowing segment as these
storms continue to congeal. These storms are in an environment with
MLCAPE around 1500 to 2000 J/kg and effective shear around 50 to 60
knots per LSX VWP which will continue to support storm organization
into the overnight hours. MRMS MESH continues to show 1.5 to 2 inch
hail with both of the supercells in this cluster. Therefore, the St.
Louis metro area will be under a significant threat for both large
hail and damaging winds for the next 1 to 2 hours, especially on the
west side.
..Bentley.. 06/02/2019
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...LSX...
LAT...LON 39209105 39259062 39139026 38799005 38459001 38129007
38069028 38079068 38219097 38549119 39009119 39209105
Read morefrom SPC Forecast Products http://www.spc.noaa.gov/products/md/md0940.html
No comments:
Post a Comment