Volatile Atmosphere Remains - Tornado Watch until 9 PM
May 8, 2014 — 5:19pm
Doppler Radar at 5:17 PM. There was a confirmed tornado touchdown 1 mile southwest of St. James - no reports of damage or injury. The atmosphere over southwest and south central MN remains volatile; additional sun is heating the ground and creating intense instability, couple with ample wind shear aloft. The tornado risk isn't over just yet.
Dry Slot. A surge of dry air aloft is temporarily clearing skies over southwest Minnesota, creating conditions favorable for more supercell thunderstorm into the evening hours. The Tornado Watch remains in effect from the Twin Cities on south/west up until 9 PM.
Tornado Watch until 9 PM CT. NOAA SPC has just issued a Tornado Watch, which includes the Twin Cities, Mankato, Redwood Falls and Des Moines, valid until 9 PM. It means conditions are ripe for a few tornadic, supercell thunderstorms. The immediate Minneapolis St. Paul area may be impacted by another round of strong to severe storms after 7-8 PM.
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 130 NWS STORM PREDICTION CENTER NORMAN OK 150 PM CDT THU MAY 8 2014 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF WESTERN AND CENTRAL IOWA SOUTHERN MINNESOTA NORTHEAST NEBRASKA SOUTHEAST SOUTH DAKOTA * EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 150 PM UNTIL 900 PM CDT. * PRIMARY THREATS INCLUDE... A FEW TORNADOES POSSIBLE WIDESPREAD LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHEAST OF REDWOOD FALLS MINNESOTA TO 65 MILES SOUTHWEST OF DES MOINES IOWA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. && DISCUSSION...THUNDERSTORMS ARE ONGOING OVER PARTS OF NORTHERN IA AND SOUTHERN MN. OTHER STORMS ARE EXPECTED TO FORM OVER EASTERN NEB AND SPREAD ACROSS THE WATCH AREA THIS AFTERNOON AND EVENING. SUPERCELLS CAPABLE OF LARGE HAIL...DAMAGING WINDS...AND A FEW TORNADOES ARE EXPECTED. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24030.
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A large area of low pressure centered over Ontario is responsible for this windy nonsense. While wind gusts won't be quite as strong as they were Monday, we'll still have a nagging breeze to combat as you meander about outdoors. The low clouds surrounding the storm system will also make an appearance again Tuesday with passing showers that will likely be present during the afternoon hours. Check the blog for more details. -Todd Nelson
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