Storm Data and Unusual Weather Phenomena - CIG

IOWA, CentralIAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-081>086-092>097Black Hawk County8 S Waterloo 30 1330CSTDallas CountyWaukee30 1438CSTDallas County3 E Waukee 30 1438CSTPolk CountyGrimes30 1447CSTPolk CountyWest Des Moines 30 1448CSTPolk CountyAnkeny30 1455CSTMarion CountyRed Rock30 1530CSTMahaska CountyNew Sharon30 1600CSTBlack Hawk County8 S Waterloo 30 1616CSTLucas County6 S Chariton 30 1618CSTDavis County1 W Troy 30 1630CSTMonroe CountyAlbia30 1653CSTMonroe County3 NE Avery 30 1706CSTWapello CountyEddyville30 1714CSTDavis CountyDrakesville30 1720CSTWapello County1 NW Farson 30 1722CSTStorm Data and Unusual Weather PhenomenaTimePath PathNumber ofEstimatedLocal/ Length WidthPersonsDamageLocation DateStandard (Miles) (Yards) Killed Injured Property Crops Character of StormGuthrie Center on the morning of the 12th. These temperatures were both the coldest ever recorded so late in the season. Most ofthe state fell below zero for at least one to two nights following the storm. It is significant to note that following the very mildweather conditions of February, flowering plants and trees were fairly advanced. Serious damage occurred to much of the state fruitcrop, however true extent will not be known for many months.\ F81OUEmmet - Kossuth - Winnebago - Worth - Palo Alto - Hancock - Cerro Gordo - Pocahontas - Humboldt -Wright - Franklin - Butler - Bremer - Sac - Calhoun - Webster - Hamilton - Hardin - Grundy - Black Hawk -Crawford - Carroll - Greene - Boone - Story - Marshall - Tama - Audubon - Guthrie - Dallas - Polk - Jasper -Poweshiek - Cass - Adair - Madison - Warren - Marion - Mahaska - Adams - Union - Clarke - Lucas -Monroe - Wapello - Taylor - Ringgold - Decatur - Wayne - Appanoose - Davis17 0200CST0 0 299.9K1400CSTIce StormFollowing the heavy snow from about 10 days earlier, Arctic air held its grip on Iowa for much of the week or so following. Withthe shallow Arctic air in place, the stage was set for an ice storm. Sub freezing temperatures were in place over Iowa during theearly morning hours of the 17th as winds became southerly aloft in advance of an approaching upper level low pressure area. Lightfreezing rain began to fall over southern Iowa shortly after midnight and spread north quickly. Amounts were not all that excessive,with most areas picking up about one tenth inch of ice across the south third of the state by sunrise on the 17th. Amounts over thecentral and north were light at this point. Heavier freezing rain spread into the north two thirds of the state during the early morningof the 17th. By noon, the temperatures warmed above freezing over the southern part of the state, while the freezing rain continuedto fall over the north and parts of the central counties. By mid afternoon, temperatures over the central and north parts of the statehad warmed to near to a little above freezing. Even though readings were below freezing over the north, the strong March sun wasable to warm roads and trees to the point that icing was no longer a problem. The total accumulation of ice over the central andnorth was generally under one quarter inch. Travel was difficult over Iowa for a period of time. Many school districts cancelledclasses for the day due to the ice. There was little damage however as there was little wind and the ice accumulation was not greatenough to overload trees and power lines. There were some spotty power outages, but nothing widespread.000000000000000000000000000000002K1K1K50K50K3K15K10KHail (0.88)Hail (0.75)Hail (1.50)Hail (1.00)Hail (0.75)Hail (1.00)Hail (0.75)Thunderstorm Wind (G61)Hail (0.75)Hail (0.75)Thunderstorm Wind (G61)Hail (0.75)Hail (0.75)March 1998Thunderstorm Wind (G52)Thunderstorm Wind (G56)Thunderstorm Wind (G52)62 56