Iowa, 2001

Hail in Iowa, August 17, 2001

August 17, 2001 · NWS FSD · 2 events in 1 county or zone

2 hail, as filed by the National Weather Service.

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
None recorded
Crop damage
None recorded
Events
2

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 forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Sioux Falls, SD wrote its last area forecast discussion before the first event at Aug 17, 2:30 PM CST, 3 hours 15 minutes earlier.

Area forecast discussion, Aug 17, 2:30 PM CST, 3 hours 15 minutes before
AREA FORECAST DISCUSSION FOR SOUTHEAST SD/SOUTHWEST MN/NORTHWEST IA
NATIONAL WEATHER SERVICE SIOUX FALLS SD
330 PM CDT FRI AUG 17 2001

IN THE FIRST PD...2 MAIN BNDRYS WL AFFECT CWA. FIRST ONE IS A SFC
TROF MOVG ACRS SERN CWA. THIS SHOW UP WELL ON SAT WITH CU FIELD
AHEAD OF TROF FM FSD-YKN. TCU EVIDENT JUST SE OF FSD. WEAK INSTABIL
ASSOCD WITH THIS TROF AND CAN NOT RULE OUT A FEW TRW AHEAD OF THIS
FEATURE. NEXT FEATURE IS A CDFNT MOVG THRU SRN ND AND NW SD.
INSTABIL MUCH GREATE WITH VERY COLD H5 AIR RUSHING DOWN INTO SERN ND
ATTM. LAPSE RATE OF 7-9 DEG PROGGED ACRS CWA WITH THIS FNT TONITE
WITH BEST LIFT ACRS NW IA AND SW MN BETWEEN 00Z AND 06Z. WL GO WITH
HIGHEST POPS ACRS THESE AREAS TONITE AND WL LEAVE SW CWA DRY AS DPS
HAVE DROPPED INTO THE 40S BEHIND FIRST BNDRY. THREAT OF PRECIP SHUD
END OVR FAR SERN CWA AFT 06Z. QUESTION IS WHEHTER ANY SVR TRW WL GET
GOING THIS EVE ACRS SW MN AND NW IA WITH CDFNT. MAIN THEAT WL BE
HAIL WITH THE COLD AIR ALOFT.

ON SAT...INTIT UNDER CYC FLOW SO CU SHUD DEVELOP FAIRLY QUICKLY OVR
ERN CWA AND MAY EVEN SEE AN ISOLD RW OVR SW MN. BUT FOR NOW WL LEAVE
FCST DRY WITH COOLER TEMPS. HIGH PRES OVR CWA ON SUN SHUD PRODUCE
FINE WX WITH PLEASANT TEMPS EXPECTED.

PATTERN BEGINS TO CHG TO A MORE ACTIVE PATTERN SUN NITE INTO NEXT
WEEK. FOR SUN NITE...DECENT WAA PATTERN WITH S/W MOVG ACRS SD. CUD
SEE SCT TRW DEVELOP OVR WRN CWA SUN NITE AND SPREAD INTO THE E ON
MON. THEN PATTERN ALOFT BEGINS TO CHANGE WITH WRN US UPPER RIDGE
SHIFTING E AND TROF MOVES INTO PAC W. THIS WL SET UP A PATTERN WITH
S/WS RIDING ACRS THE NRN PLAINS WITH TROPICAL CONNECTION
DEVELOPING. THIS WL BRING A CHC OF TRW TO THE CWA NEXT WEEK WITH
TIMING OF EACH WAVE DIFFICULT. NONETHELESS...LOOKS LIKE AN ACTIVE
PATTERN AND WL NEED TO MENTION CHC OF TRW MOST AREAS IN THE EFP.
SHUD ALSO BECOME MORE WARM AND HUMID AS PERSISTENT H85 JET ADVECTS
DEEPER MOISTURE N...ESPEC OVR ERN CWA.

.FSD...NONE.

The radar

The Sioux Falls radar (KFSD), 106 km away, was scanning. The volume nearest the first event began at 23:42 UTC.

Open the radar archive at this moment

Event by event

2 hail. Local standard time, as filed.

Hail, Plymouth

When
August 17, 5:45 PM CST
Where
Plymouth County, 1 mi SW of Remsen
Measured
1 in hail
Reported by
GENERAL PUBLIC
Coordinates
42.800, -96.000

Hail, Plymouth

When
August 17, 5:45 PM CST
Where
Plymouth County, Remsen
Measured
0.75 in hail
Reported by
GENERAL PUBLIC
Coordinates
42.817, -95.983

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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

The same day elsewhere

More

Every storm in Iowa in 2001Every state in 2001This day in weather historyWarnings in Iowa, August 2001

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: 5265492, 5265493.