THE HYDROMETEOROLOGICAL PREDICTION CENTER
CAMP SPRINGS, MD
STORM SUMMARY MESSAGE
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
Last Updated: 439 AM EDT WED JUL 20 2011