STORM SUMMARY NUMBER 06 FOR HIGH HEAT INDICES
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
500 AM EDT WED JUL 20 2011
 
...DANGEROUS HEAT WAVE CONTINUES ACROSS MUCH OF THE CENTRAL U.S.
THE HEAT WILL SPREAD INTO THE EASTERN U.S. TODAY...
 
EXCESSIVE HEAT WATCHES...WARNINGS AND HEAT ADVISORIES ARE IN
EFFECT FOR A LARGE PORTION OF THE CENTRAL U.S. AND OHIO RIVER
VALLEY...AS WELL AS PORTIONS OF THE MID-ATLANTIC AND NORTHEASTERN
STATES. TEMPERATURES WILL FEEL LIKE 100 TO 110 DEGREES OR HIGHER
DURING THE AFTERNOON HOURS.
 
FOR A DETAILED GRAPHICAL DEPICTION OF THE LATEST
WATCHES...WARNINGS AND ADVISORIES...PLEASE SEE WWW.WEATHER.GOV

HEAT INDEX SAFETY INFORMATION AND MEANINGS OF WATCHES...WARNINGS
AND ADVISORIES CAN BE FOUND AT WWW.WEATHER.GOV/OM/HEAT/INDEX.SHTML

GRAPHICAL HEAT INDEX FORECASTS CAN BE FOUND AT
www.hpc.ncep.noaa.gov/heat_index_MAX.shtml

...SELECTED HIGH HEAT INDEX VALUES FROM TUESDAY JUL 19 2011...

...ILLINOIS...
TAYLORVILLE                                  121
RANTOUL                                      120
CHAMPAIGN/URBANA                             117
PEORIA                                       116
PONTIAC                                      116
BLOOMINGTON                                  115
MACOMB                                       115

...INDIANA...
TERRE HAUTE                                  115
LAFAYETTE                                    112
SHELBYVILLE                                  112
BLOOMINGTON                                  110
INDIANAPOLIS                                 110

...IOWA...
NEWTON                                       129
KNOXVILLE                                    123
COUNCIL BLUFFS                               122
ATLANTIC                                     119
FAIRFIELD                                    118
ORANGE CITY                                  117
DES MOINES                                   111

...KANSAS...
LAWRENCE                                     106
TOPEKA                                       106
HUTCHINSON                                   105
MANHATTAN                                    105
WICHITA                                      105

...KENTUCKY...
FORT KNOX                                    109
LOUISVILLE                                   109
COVINGTON                                    108
OWENSBORO                                    108
HENDERSON CITY                               105

...MINNESOTA...
HUTCHINSON                                   123
MADISON                                      120
MINNEAPOLIS                                  118
OWATONNA                                     117
GRANITE FALLS                                114
NEW ULM                                      114
ST. CLOUD                                    114

...MISSOURI...
ST. LOUIS                                    110
WHITEMAN AFB                                 108
KANSAS CITY                                  107
KIRKSVILLE                                   107
POPLAR BLUFF                                 105

...MONTANA...
SIDNEY                                       110

...OHIO...
HAMILTON                                     106
WILMINGTON                                   105
DAYTON                                       103

...OKLAHOMA...
ARDMORE                                      107
SHAWNEE                                      107

...NEBRASKA...
OFFUTT AFB                                   112
TEKAMAH                                      110
NORFOLK                                      107
COLUMBUS                                     105
NEBRASKA CITY                                105

...NORTH DAKOTA...
GWINNER                                      122
BISMARCK                                     117
LINTON                                       117
FARGO                                        115
CARRINGTON                                   114
JAMESTOWN                                    114

...SOUTH DAKOTA...
ABERDEEN                                     119
MITCHELL                                     114
MOBRIDGE                                     112
HURON                                        111
PIERRE                                       110

...TENNESSEE...
MEMPHIS                                      112

...TEXAS...
FORT HOOD                                    111
GRANBURY                                     107
MINERAL WELLS                                107
TYLER                                        107

...WISCONSIN...
PRAIRIE DU CHIEN                             116
BOSCOBEL                                     114
LA CROSSE                                    109
VOLK                                         108
MADISON                                      105


A LARGE RIDGE OF HIGH PRESSURE IN THE UPPER LEVELS OF THE
ATMOSPHERE REMAINS IN PLACE ACROSS THE CENTRAL U.S...KEEPING HOT
TEMPERATURES IN PLACE. THE HOT TEMPERATURES COMBINED WITH HIGH
RELATIVE HUMIDITY WILL CREATE DANGEROUS HEAT INDICES WELL ABOVE
100 DEGREES OVER A LARGE PORTION OF THE NATION. THE UPPER-LEVEL
RIDGE HAS BEGUN TO EXPAND TOWARD THE EASTERN STATES. HIGH
TEMPERATURES IN THE MID 90S WILL BE POSSIBLE THE MID-ATLANTIC
STATES TODAY. HIGH TEMPERATURES NEAR 100 DEGREES WILL BE POSSIBLE
BY THURSDAY ACROSS MUCH OF THE MID-ATLANTIC STATES AND PARTS OF
THE SOUTHEAST U.S. THESE TRIPLE-DIGIT TEMPERATURES ARE FORECAST TO
REMAIN IN PLACE ACROSS THE EASTERN U.S. THROUGH SATURDAY...BEFORE
COOLING OFF SLIGHTLY TO THE MID 90S BY SUNDAY. THE EXTREMELY HOT
TEMPERATURES SHOULD BEGIN TO SUBSIDE ACROSS PORTIONS OF THE
NORTHERN PLAINS ON FRIDAY...BUT THE INTENSE HEAT WILL REMAIN IN
PLACE THROUGH THE WEEKEND ACROSS THE CENTRAL AND SOUTHERN PLAINS.

THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 500 AM EDT...THURSDAY JULY 21. PLEASE REFER
TO YOUR LOCAL NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL
INFORMATION ON THIS EVENT.

RYAN