WXALERT: Severe Thunderstorm Watch Until 6:00 AM

Untitled The Storm Prediction Center in Norman, OK has issued a new Severe Thunderstorm Watch in effect for much of Iowa until 6:00 AM.  Thunderstorms are developing all over the state with numerous reports of large hail.

As storms begin to move to the east, strong and damaging winds will become possible.  Here is a look at the raw text from the Storm Prediction Center.

HAIL TO 2 INCHES IN DIAMETER…THUNDERSTORM WIND GUSTS TO 70 MPH…AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTHEAST OF MANKATO MINNESOTA TO 20 MILES SOUTHEAST OF KNOXVILLE IOWA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5). REMEMBER…A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. OTHER WATCH INFORMATION…THIS SEVERE THUNDERSTORM WATCH REPLACES TORNADO WATCH NUMBER 449. WATCH NUMBER 449 WILL NOT BE IN EFFECT AFTER 1155 PM CDT. CONTINUE…WW 447WW 448WW 450WW 451WW 452WW 453WW 454… DISCUSSION…THUNDERSTORMS CONTINUE IN THE BROAD ZONE OF LOW-LEVEL WARM ADVECTION CENTERED OVER IA. A RESERVOIR OF MODERATE-STRONG INSTABILITY REMAINS TO THE SW OF THE WARM FRONT NEAR THE MS RIVER…AND IN ADVANCE OF THE ONGOING STORMS ACROSS WRN/CENTRAL IA…AND THIS INSTABILITY WILL MAINTAIN A SEVERE THREAT OVERNIGHT. VERTICAL SHEAR IS STILL FAVORABLE FOR SUPERCELLS…THOUGH SLOW STABILIZATION OF NEAR-SURFACE LAYER SUGGESTS THAT LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY THREATS. AVIATION…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 27020.

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