Severe thunderstorms produced large hail and damaging winds across southeast Nebraska and western Iowa on evening of the 21st.
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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.
The episode as NWS OAX wrote it up.
Severe thunderstorms produced large hail and damaging winds across southeast Nebraska and western Iowa on evening of the 21st.
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 Omaha, NE wrote its last area forecast discussion before the first event at Sep 21, 5:20 PM CST, 3 hours 30 minutes earlier.
Area Forecast Discussion National Weather Service Omaha/Valley NE 620 PM CDT Sat Sep 21 2019 .SHORT TERM...(Tonight through Tuesday) Issued at 344 PM CDT Sat Sep 21 2019 The main hazards during the short term are severe weather and flooding. Vigorous upper level shortwave trough moving across the Dakotas will cause a cold front to move southeast across eastern Nebraska and southwest Iowa this evening. Model guidance slows the front as it moves into Southeast Nebraska tonight. At this time southwesterly low level flow is limiting the convergence along the front and not allowing for convective development. However, the lull in thunderstorm development is only temporary.Expect by 23-00Z convection is forecast to develop along the front in southeast Nebraska where ML CAPE values are presently between 2000-2500 J/KG along with 45-50 knots of effective shear. Some Supercell storms may develop and eventual evolve into a line along the front. Large hail and damaging winds are the primary hazards. There is slight possibility of an isolated tornado in southeast Nebraska. As the night progresses, more thunderstorms are forecast along and north of the front. With some training of storms along the front and Precipitable Water values around 1.5 inches in southeast Nebraska, have left the Flash Flood Watch for southeast Nebraska and Fremont and Page Counties in Iowa. Precipitation lingers into Sunday midday in the southeast. Precipitation an clouds will start clearing out as upper trough moves across the Northern and Central Plains during the day. Surface high pressure then spreads across the area, bring dry weather through Monday. Surface return flow comes back into the area on Tuesday with weak surface warm front in northern Kansas, Isentropic lift north of the front is expected to develop showers and thunderstorms across southeast Nebraska and southwest Iowa through Tuesday night. .LONG TERM...(Tuesday night through Saturday) Issued at 344 PM CDT Sat Sep 21 2019 Precipitation continues across the area on Tuesday night as another shortwave trough and associated jet max moves across the Northern and Central Plains. This drives another cold front south across the area Tuesday night into Wednesday morning. After that, another brief dry period is expected until Thursday afternoon and Friday when another shortwave trough moves across the area producing more storms. && .AVIATION...(For the 00Z TAFS through 00Z Sunday evening) Issued at 609 PM CDT Sat Sep 21 2019 Main concern for this TAF period will be storm development this evening along and south of of a frontal boundary. LNK has the highest chance of being impacted by evening storms. OMA also may see evening storms, although higher chances will remain south of the TAF site. Evening storms could be strong to severe, but severe threat should diminish after midnight. Shower and thunderstorms chances may continue into the morning Sunday at OMA and LNK but are not expected to be severe. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...Flash Flood Watch through Sunday morning for NEZ068-089>093. IA...Flash Flood Watch through Sunday morning for IAZ090-091. && SHORT TERM...Smith LONG TERM...Smith AVIATION...HB
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 555 PM CDT Sat Sep 21 2019 NEZ011-012-015>018-030>033-042-043-221300- Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison-Stanton- Cuming-Platte-Colfax- 555 PM CDT Sat Sep 21 2019 This Hazardous Weather Outlook is for portions of northeast Nebraska. .DAY ONE...Tonight and Sunday Minor to locally moderate flooding will continue along the Missouri River above Lewis and Clark Lake, and from near Decatur southward past Rulo. .DAYS TWO THROUGH SEVEN...Sunday night through Saturday Missouri River levels will continue to rise south south of Brownville through Monday, then begin to fall through the week. North of Brownville river levels should be on the decline. Minor to moderate river flooding will continue along most of the Missouri River in Nebraska/Iowa through next week. There will be a couple chances for thunderstorm activity next week, with the most likely period for stronger storms occurring between Thursday and Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed tonight and Sunday. IAZ043-055-056-069-079-080-090-091-NEZ034-044-045-050>053-065>068- 078-088>093-221300- Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont- Page-Burt-Dodge-Washington-Butler-Saunders-Douglas-Sarpy-Seward- Lancaster-Cass-Otoe-Saline-Jefferson-Gage-Johnson-Nemaha-Pawnee- Richardson- 555 PM CDT Sat Sep 21 2019 This Hazardous Weather Outlook is for portions of southwest Iowa...west central Iowa...east central Nebraska and southeast Nebraska. .DAY ONE...Tonight and Sunday A Flash Flood Watch remains in effect over parts of southeastern Nebraska and southern Iowa from 7 PM this evening through 10 AM Sunday. Some thunderstorms will be capable of producing high rainfall rates culminating in 1 to 3 inches of rainfall with locally higher amounts possible. Severe thunderstorms are possible tonight generally along and south of Interstate 80. The primary threats are large hail and damaging winds. There is also a slight chance of a tornado in southeast Nebraska. Minor to moderate flooding will continue along the Missouri River above Lewis and Clark Lake, and from near Decatur southward past Rulo. Thunderstorms will be possible on Saturday. .DAYS TWO THROUGH SEVEN...Sunday night through Saturday Missouri River levels will continue to rise south south of Brownville through Monday, then begin to fall through the week. North of Brownville river levels should be on the decline. Minor to moderate river flooding will continue along most of the Missouri River in Nebraska/Iowa through next week. There will be a couple chances for thunderstorm activity next week, with the most likely period for stronger storms occurring between Thursday and Saturday. .SPOTTER INFORMATION STATEMENT... Spotter activation is likely tonight over southeast Nebraska and southwest Iowa. Smith
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
847 PM CDT SAT SEP 21 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0826 PM HAIL COLON 41.30N 96.60W
09/21/2019 E1.75 INCH SAUNDERS NE PUBLIC
&&
PEARSONPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
853 PM CDT SAT SEP 21 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0845 PM HAIL 4 SE CEDAR BLUFFS 41.37N 96.55W
09/21/2019 M1.50 INCH SAUNDERS NE NWS EMPLOYEE
NWS EMPLOYEE REPORTS 1.5 INCH HAIL, WITH
GUSTS TO 60 PLUS MPH.
&&
ALBRIGHTPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
913 PM CDT SAT SEP 21 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0854 PM HAIL 1 S INGLEWOOD 41.40N 96.51W
09/21/2019 U1.50 INCH SAUNDERS NE PUBLIC
REPORT FROM MPING: PING PONG BALL (1.50
IN.).
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
937 PM CDT SAT SEP 21 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0935 PM NON-TSTM WND GST 2 ESE TEKAMAH 41.76N 96.18W
09/21/2019 M71 MPH BURT NE ASOS
&&PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
939 PM CDT SAT SEP 21 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0935 PM TSTM WND GST 2 ESE TEKAMAH 41.76N 96.18W
09/21/2019 M71 MPH BURT NE ASOS
CORRECTS PREVIOUS NON-TSTM WND GST REPORT
FROM 2 ESE TEKAMAH.
&&Special Weather Statement
National Weather Service Omaha/Valley Nebraska
947 PM CDT Sat Sep 21 2019
IAZ090-NEZ068-091-220315-
Fremont IA-Otoe NE-Nemaha NE-
947 PM CDT Sat Sep 21 2019
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN FREMONT...
NORTHWESTERN NEMAHA AND EASTERN OTOE COUNTIES UNTIL 1015 PM CDT...
At 946 PM CDT, Doppler radar was tracking a strong thunderstorm near
Nebraska City, or 31 miles northwest of Tarkio, moving east at 30
mph.
Wind gusts up to 50 mph will be possible with this storm.
Locations impacted include...
Nebraska City, Dunbar, Julian and Camp Catron.
This includes Interstate 29 between mile markers 4 and 15.
A Severe Thunderstorm Watch remains in effect until midnight CDT for
southeastern Nebraska.
LAT...LON 4075 9604 4078 9568 4058 9572 4059 9576
4058 9578 4056 9576 4053 9577 4052 9573
4050 9573 4049 9600
TIME...MOT...LOC 0246Z 261DEG 26KT 4064 9591
MEADThe Omaha radar (KOAX), 63 km away, was scanning. The volume nearest the first event began at 02:50 UTC.
1 thunderstorm wind. Local standard time, as filed.
A Coop observer estimated winds from 55 to 65 mph, which broke some limbs on trees.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2019Every state in 2019This day in weather historyWarnings in Iowa, September 2019
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: 857821.