Iowa, 1999

Hail and Damaging Winds in Iowa, May 16, 1999

May 16, 1999 · NWS ARX · 15 events in 4 counties and zones

Numerous reports of hail the size of dimes and quarters were received from spotters and law enforcement officials. Winds gusting to 65 mph blew the roofs off homes near Elkader (Clayton County) and knocked down several large trees.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
$240,000
Crop damage
None recorded
Events
15

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS ARX wrote it up.

Numerous reports of hail the size of dimes and quarters were received from spotters and law enforcement officials. Winds gusting to 65 mph blew the roofs off homes near Elkader (Clayton County) and knocked down several large trees.

The radar

The La Crosse radar (KARX), 121 km away, was scanning. The volume nearest the first event began at 18:37 UTC.

Open the radar archive at this moment

Event by event

11 hail, 4 thunderstorm wind. Local standard time, as filed.

Hail, Fayette

When
May 16, 12:40 PM CST
Where
Fayette County, Fayette
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
42.830, -91.800

Hail, Allamakee

When
May 16, 1:20 PM CST
Where
Allamakee County, Postville
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
43.080, -91.580

Hail, Fayette

When
May 16, 1:25 PM CST
Where
Fayette County, West Union
Measured
1 in hail
Property damage
$35,000
Reported by
LAW ENFORCEMENT
Coordinates
42.970, -91.800

Thunderstorm Wind, Fayette

When
May 16, 1:30 PM CST
Where
Fayette County, West Union
Measured
52 kt (60 mph)
Property damage
$15,000
Reported by
LAW ENFORCEMENT
Coordinates
42.970, -91.800

Hail, Clayton

When
May 16, 1:48 PM CST
Where
Clayton County, Farmersburg
Measured
1 in hail
Property damage
$30,000
Reported by
LAW ENFORCEMENT
Coordinates
42.970, -91.530

Thunderstorm Wind, Clayton

When
May 16, 2:05 PM CST
Where
Clayton County, Elkader
Measured
56 kt (64 mph)
Property damage
$100,000
Reported by
LAW ENFORCEMENT
Coordinates
42.850, -91.400

Hail, Clayton

When
May 16, 2:37 PM CST
Where
Clayton County, Strawberry Pt
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
42.680, -91.530

Hail, Fayette

When
May 16, 2:50 PM CST
Where
Fayette County, 3 mi S of Arlington
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
42.700, -91.670

Hail, Clayton

When
May 16, 3:10 PM CST
Where
Clayton County, Garber
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
42.730, -91.270

Hail, Howard

When
May 16, 4:48 PM CST
Where
Howard County, Lourdes
Measured
0.75 in hail
Reported by
LAW ENFORCEMENT
Coordinates
43.270, -92.300

Hail, Fayette

When
May 16, 5:15 PM CST
Where
Fayette County, Maynard
Measured
1 in hail
Property damage
$20,000
Reported by
LAW ENFORCEMENT
Coordinates
42.770, -91.870

Thunderstorm Wind, Clayton

When
May 16, 5:23 PM CST
Where
Clayton County, Garnavillo
Measured
54 kt (62 mph)
Property damage
$15,000
Reported by
LAW ENFORCEMENT
Coordinates
42.870, -91.230

Hail, Fayette

When
May 16, 6:13 PM CST
Where
Fayette County, West Union
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
42.970, -91.800

Hail, Fayette

When
May 16, 6:20 PM CST
Where
Fayette County, Oelwein
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
42.680, -91.900

Thunderstorm Wind, Clayton

When
May 16, 7:10 PM CST
Where
Clayton County, Osborne
Measured
55 kt (63 mph)
Property damage
$25,000
Reported by
LAW ENFORCEMENT
Coordinates
42.800, -91.430

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Iowa in 1999Every state in 1999This day in weather historyWarnings in Iowa, May 1999

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5696075, 5696076, 5696077, 5696078, 5696079, 5696085, 5696080, 5696086, 5696081, 5696082, 5696087, 5696088, 5696083, 5696084, 5696089.