Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 251936
SWOMCD
SPC MCD 251936
NVZ000-IDZ000-ORZ000-252130-

Mesoscale Discussion 0518
NWS Storm Prediction Center Norman OK
0236 PM CDT Fri May 25 2018

Areas affected...North-central and northwestern Nevada...extreme
southwestern Idaho...portions of southeastern Oregon

Concerning...Severe potential...Watch unlikely

Valid 251936Z - 252130Z

Probability of Watch Issuance...20 percent

SUMMARY...A severe wind gust and isolated hail risk will exist with
the strongest storms in the discussion area. A WW is not anticipated
at this time.

DISCUSSION...Surface heating and the approach of a mid-level trough
have led to storm development in northwestern Nevada. With dewpoints
in the upper-40s to low-50s, MUCAPE values have risen to 1000-2000
J/kg. Effective bulk-shear values within the area are generally
25-30 kts. A risk for severe wind gusts as well as isolated hail
with the strongest storms will exist this afternoon. While initial
development will be semi-discrete, with time storms should congeal
into an MCS. The threats with these storms should preclude a WW
issuance.

..Wendt/Hart.. 05/25/2018

...Please see www.spc.noaa.gov for graphic product...

ATTN...WFO...BOI...LKN...REV...MFR...

LAT...LON   42782010 43021938 43141791 42841659 42381627 41601624
            40961644 40641776 40611837 41001907 41751989 42422010
            42782010



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