363
FXUS01 KWBC 280806
PMDSPD
SHORT RANGE FORECAST DISCUSSION
NWS WEATHER PREDICTION CENTER COLLEGE PARK MD
405 AM EDT WED JUN 28 2023
VALID 12Z WED JUN 28 2023 - 12Z FRI JUN 30 2023
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF
THE UPPER MISSISSIPPI VALLEY ON WEDNESDAY, MOVING TO THE MIDDLE
MISSISSIPPI/OHIO VALLEYS ON THURSDAY...
...EXCESSIVE HEAT WATCHES/WARNINGS AND ADVISORIES OVER PARTS OF
THE SOUTHERN ROCKIES, SOUTHERN PLAINS, MIDDLE/LOWER MISSISSIPPI
VALLEY, CENTRAL GULF COAST...
...AIR QUALITY ALERTS OVER PARTS OF THE UPPER/MIDDLE MISSISSIPPI
VALLEY, GREAT LAKES, WESTERN OHIO VALLEY, CENTRAL APPALACHIANS,
AND MID-ATLANTIC...
PERSISTENT UPPER-LEVEL ENERGY OVER THE NORTHEAST WILL TRIGGER
SHOWERS WITH EMBEDDED THUNDERSTORMS THROUGH FRIDAY. ADDITIONALLY,
MOISTURE STREAMING NORTHWARD OVER THE MISSISSIPPI VALLEY AND
UPPER-LEVEL ENERGY WILL CREATE SHOWERS AND SEVERE THUNDERSTORMS
OVER PARTS OF WISCONSIN AND SOUTHEASTERN MINNESOTA. THEREFORE, THE
SPC HAS ISSUED A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE
UPPER MISSISSIPPI VALLEY THROUGH THURSDAY MORNING. THE HAZARDS
ASSOCIATED WITH THESE THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE
THUNDERSTORM WIND GUSTS, HAIL, AND A FEW TORNADOES.
LOW PRESSURE AND A FRONT OVER THE MIDDLE MISSISSIPPI VALLEY WILL
PRODUCE SHOWERS AND SEVERE THUNDERSTORMS ON THURSDAY. THEREFORE,
THE SPC HAS ISSUED A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER
PARTS OF THE MIDDLE MISSISSIPPI/WESTERN OHIO VALLEYS FROM THURSDAY
INTO FRIDAY MORNING. THE HAZARDS ASSOCIATED WITH THESE
THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND
GUSTS, HAIL, AND A FEW TORNADOES. ADDITIONALLY, THERE IS A THREAT
OF TWO-INCH OR GREATER HAIL OVER PARTS OF THE AREA ON THURSDAY.
FURTHER, UPPER-LEVEL ENERGY MOVES EASTWARD OVER THE UPPER MIDWEST,
PRODUCING SHOWERS AND SEVERE THUNDERSTORMS ON WEDNESDAY.
THEREFORE, THE SPC HAS ISSUED A SLIGHT RISK OF SEVERE
THUNDERSTORMS OVER PARTS OF THE UPPER MISSISSIPPI VALLEY FROM
WEDNESDAY INTO THURSDAY MORNING. THE HAZARDS ASSOCIATED WITH THESE
THUNDERSTORMS ARE FREQUENT LIGHTNING, SEVERE THUNDERSTORM WIND
GUSTS, HAIL, AND A FEW TORNADOES.
MEANWHILE, UPPER-LEVEL IMPULSES AND AN UPPER-LEVEL TROUGH WILL
TRIGGER SCATTERED SHOWERS AND THUNDERSTORMS OVER PARTS OF THE
GREAT BASIN, NORTHERN INTERMOUNTAIN REGION, AND THE NORTHERN
ROCKIES ON WEDNESDAY, TAPERING OFF OVER THE NORTHERN INTERMOUNTAIN
REGION BY THURSDAY MORNING.
MOREOVER, UPPER-LEVEL ENERGY MOVING EASTWARD FROM CALIFORNIA/GREAT
BASIN TO CENTRAL ROCKIES/CENTRAL PLAINS WILL PRODUCE SHOWERS AND
THUNDERSTORMS OVER PARTS OF THE GREAT BASIN, NORTHERN/CENTRAL
ROCKIES INTO PARTS OF THE SOUTHERN ROCKIES, AND NORTHERN/CENTRAL
HIGH PLAINS FROM THURSDAY EVENING INTO FRIDAY.
FURTHERMORE, WILDFIRE SMOKE FROM CANADA WILL REDUCE AIR QUALITY
OVER PARTS OF THE UPPER/MIDDLE MISSISSIPPI VALLEY, GREAT LAKES,
WESTERN OHIO VALLEY, CENTRAL APPALACHIANS, AND MID-ATLANTIC,
PROMPTING AIR QUALITY WARNINGS OVER THE AREA.
LASTLY, UPPER-LEVEL RIDGING OVER THE SOUTH-CENTRAL PORTION OF THE
COUNTRY WILL EXPAND NORTHWARD INTO THE MIDDLE MISSISSIPPI VALLEY
BRINGING WITH THE RIDGE HOT HIGH TEMPERATURES AND TEMPERATURES NOT
COOLING OFF MUCH OVERNIGHT, WHICH HAVE CONTRIBUTED TO EXCESSIVE
HEAT WARNINGS AND HEAT ADVISORIES OVER MOST OF TEXAS, SOUTHERN NEW
MEXICO, SOUTHEASTERN OKLAHOMA, EASTERN KANSAS, MISSOURI, SOUTHERN
ARKANSAS, LOUISIANA, AND SOUTHERN MISSISSIPPI. ALSO, EXCESSIVE
HEAT WATCHES ARE OVER PARTS OF SOUTHERN ILLINOIS, WESTERN
TENNESSEE, MISSISSIPPI, AND ALABAMA.
ZIEGENFELDER
GRAPHICS AVAILABLE AT
HTTPS://WWW.WPC.NCEP.NOAA.GOV/BASICWX/BASICWX_NDFD.PHP
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