THE HYDROMETEOROLOGICAL PREDICTION CENTER
CAMP SPRINGS, MD
STORM SUMMARY MESSAGE
STORM SUMMARY NUMBER 04 FOR HIGH HEAT INDICES
NWS HYDROMETEOROLOGICAL PREDICTION CENTER CAMP SPRINGS MD
500 AM EDT MON JUL 18 2011
...COMBINATION OF VERY HOT TEMPERATURES AND HIGH HUMIDITY WILL
CREATE DANGEROUS HEAT INDICES OVER THE CENTRAL U.S. THE HOT
WEATHER WILL SPREAD INTO THE EASTERN U.S. THIS WEEK...
EXCESSIVE HEAT WATCHES...WARNINGS AND HEAT ADVISORIES ARE IN
EFFECT FOR A LARGE PORTION OF THE CENTRAL U.S. 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 SUNDAY JUL 17 2011...
...ARKANSAS...
ARKADELPHIA 107
FORT SMITH 106
...ILLINOIS...
RANTOUL 108
SAVANNAH 108
MOLINE 105
TAYLORVILLE 105
CHICAGO 103
...IOWA...
NEWTON 126
KNOXVILLE 125
COUNCIL BLUFFS 124
ATLANTIC 121
ORANGE CITY 117
SHENANDOAH 116
SIOUX CITY 116
ALGONA 114
ESTHERVILLE 114
DES MOINES 111
IOWA CITY 111
...KANSAS...
TOPEKA 110
HUTCHINSON 108
SALINA 107
WICHITA 107
EMPORIA 106
HAYS 105
...LOUISIANA...
MONROE 109
BASTROP 108
...MINNESOTA...
MADISON 119
HUTCHINSON 116
AUSTIN 112
BENSON 111
FAIRMONT 111
ST JAMES 111
WINDOM 111
MINNEAPOLIS 109
LITCHFIELD 108
...MISSOURI...
LITTON 108
WHITEMAN AFB 106
KANSAS CITY 105
...OKLAHOMA...
SHAWNEE 112
ATOKA 108
OKMULGEE 108
BARTLESVILLE 107
STILLWATER 106
TULSA 105
...NEBRASKA...
YORK 116
NORFOLK 115
TEKAMAH 115
OMAHA 113
LINCOLN 111
ALBION 110
COLUMBUS 110
ORD 108
VALENTINE 108
...NORTH DAKOTA...
GWINNER 117
BISMARCK 115
LINTON 111
JAMESTOWN 110
FARGO 108
...SOUTH DAKOTA...
MITCHELL 120
ABERDEEN 117
HURON 117
CHAMBERLAIN 116
SIOUX FALLS 115
WINNER 115
WATERTOWN 111
MOBRIDGE 110
PIERRE 108
...TEXAS...
MINEOLA 106
NACOGDOCHES 106
TYLER 106
...WISCONSIN...
VOLK/CAMP DOUGLAS 114
CLINTONVILLE 113
EAU CLAIRE 112
LADYSMITH 111
MINOCQUA 111
PHILLIPS 111
GREEN BAY 110
WISCONSIN RAPIDS 110
MADISON 107
MILWAUKEE 106
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 WILL BEGIN TO EXPAND EASTWARD THIS WEEK. BY MIDWEEK...THE
HOT TEMPERATURES WILL BEGIN TO SPREAD INTO THE EASTERN
STATES...WITH HIGH TEMPERATURES IN THE MID TO UPPER 90S ARRIVING
IN THE MID-ATLANTIC STATES AS SOON AS WEDNESDAY. HIGH TEMPERATURES
IN EXCESS OF 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 THE WEEKEND.
THE NEXT STORM SUMMARY WILL BE ISSUED BY THE HYDROMETEOROLOGICAL
PREDICTION CENTER AT 500 AM EDT...TUESDAY JULY 19. PLEASE REFER TO
YOUR LOCAL NATIONAL WEATHER SERVICE OFFICE FOR ADDITIONAL
INFORMATION ON THIS EVENT.
RYAN
Last Updated: 500 AM EDT MON JUL 18 2011