Alert archive / Nebraska / Flash Flood Warnings in 2024

Flash Flood Warning 33, NWS Omaha, NE

July 2, 20247 counties in Nebraska

NWS Omaha, NE issued this flash flood warning at Jul 2, 2024, 1:32 AM CDT for 7 counties in Nebraska. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 2, 2024, 1:32 AM CDT (06:32 UTC)
Expired: Jul 2, 2024, 6:18 AM CDT
In force: 5 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

Counties Butler County, NE, Cass County, NE, Douglas County, NE, Lancaster County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE

The radar

The Omaha radar (KOAX), 34 km from the middle of the area, began a volume at 06:34 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 6.5 hours before the alert went out and 33 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 53 J/kg
Mixed-layer CIN: -444 J/kg
Mixed-layer LCL: 953 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 259 m²/s²
0-3 km storm-relative helicity: 443 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 9.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Jul 2, 12:43 AM CDT, 49 minutes earlier.

Area forecast discussion, Jul 2, 12:43 AM CDT, 49 minutes before

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Hazardous weather outlook, Jul 1, 9:03 PM CDT, 4 hours 29 minutes before

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
903 PM CDT Mon Jul 1 2024

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-021200-
Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont-
Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison-
Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler-
Saunders-Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline-
Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson-
903 PM CDT Mon Jul 1 2024

This Hazardous Weather Outlook is for portions of southwest
Iowa...west central Iowa...east central Nebraska...northeast
Nebraska and southeast Nebraska.

.DAY ONE...Tonight and Tuesday

Minor to moderate flooding will continue along the Missouri
River south of Decatur.

Another round of strong to severe thunderstorms will move through
the area this evening through 3 AM...with additional non-severe
storms after 3 AM. Though all modes of severe weather are
possible, the greatest risk will be damaging winds. The most
likely area to experience wind gusts greater than 75 mph or a
tornado will be south and west of a line from Ord to Norfolk to
Fremont to Lincoln to Beatrice, and the most likely time will be
before midnight.

Flash flooding potential will be maximized in any areas that
receive multiple rounds of thunderstorms, with some localized
areas receiving more than 3 inches of rain.

Widespread storms are likely again on Tuesday. Though strong to
severe thunderstorms will be possible as far north as US-30, the
most likely region to see severe weather will be south of I-80 and
east of US-77. The primary hazard will be damaging winds, though a
brief tornado or two and isolated instances of quarter sized hail
will also be possible. Flooding will again be a potential hazard
tomorrow evening.

.DAYS TWO THROUGH SEVEN...Tuesday night through Monday

Another round of strong thunderstorms seems increasingly likely
for the afternoon and evening of July 4th. The greatest risk for
these severe storms will be south of US-30 and east of US-77.

Minor to moderate flooding will continue along the Missouri River
below Decatur into this upcoming week. With several rounds of
storms expected tonight through Tuesday, additional or prolonged
flooding may become possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed through midnight.

In the hours before

Local storm report, Jul 2, 12:29 AM CDT, 1 hour 3 minutes before

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Local storm report, Jul 2, 12:30 AM CDT, 1 hour 2 minutes before

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Local storm report, Jul 2, 12:40 AM CDT, 52 minutes before

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Local storm report, Jul 2, 12:41 AM CDT, 51 minutes before

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Local storm report, Jul 2, 12:46 AM CDT, 46 minutes before

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Local storm report, Jul 2, 1:12 AM CDT, 20 minutes before

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The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 1, 7:44 PM CDT	Special Weather Statement	OAX	Madison	16 min
Jul 1, 7:56 PM CDT	Special Weather Statement	OAX	Boone	34 min
Jul 1, 8:03 PM CDT	Areal Flood Advisory	OAX	Boone	3 hr
Jul 1, 8:06 PM CDT	Special Weather Statement	OAX	Wayne	24 min
Jul 1, 8:22 PM CDT	Special Weather Statement	OAX	Platte	38 min
Jul 1, 8:24 PM CDT	Special Weather Statement	OAX	Wayne	21 min
Jul 1, 8:27 PM CDT	Severe Thunderstorm Warning	OAX	Thurston, Wayne	11 min
Jul 1, 8:57 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Platte	48 min
Jul 1, 9:38 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Lancaster, Saunders, Seward	52 min
Jul 1, 10:13 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saline, Seward	47 min
Jul 1, 10:40 PM CDT	Areal Flood Advisory	OAX	Lancaster	26 min
Jul 1, 10:41 PM CDT	Tornado Warning	OAX	Saline, Seward	18 min
Jul 1, 10:48 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster, Otoe, Saline, Saunders	42 min
Jul 1, 10:56 PM CDT	Areal Flood Advisory	OAX	Butler, Cass, Lancaster, Saline, Sarpy, Saunders and 1 more	4 hr
Jul 1, 10:58 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saline, Seward	47 min
Jul 1, 11:03 PM CDT	Tornado Warning	OAX	Saline	27 min
Jul 1, 11:06 PM CDT	Flash Flood Warning	OAX	Lancaster	5 hr
Jul 1, 11:14 PM CDT	Flash Flood Warning	OAX	Douglas, Sarpy	5 hr
Jul 1, 11:27 PM CDT	Tornado Warning	OAX	Lancaster, Saline, Seward	33 min
Jul 1, 11:41 PM CDT	Areal Flood Advisory	OAX	Cass, Lancaster, Saline, Seward	3 hr
Jul 1, 11:46 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster, Otoe, Seward	44 min
Jul 1, 11:50 PM CDT	Tornado Warning	OAX	Lancaster	25 min
Jul 1, 11:54 PM CDT	Flash Flood Warning	OAX	Lancaster, Saline, Seward	4 hr
Jul 2, 12:26 AM CDT	River Flood Warning	OAX	Saunders	33 hr
Jul 2, 12:27 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster, Otoe, Sarpy	48 min
Jul 2, 12:39 AM CDT	Areal Flood Advisory	OAX	Cass, Lancaster, Sarpy, Saunders	118 min
Jul 2, 12:45 AM CDT	Areal Flood Advisory	OAX	Cass	112 min
Jul 2, 12:51 AM CDT	Areal Flood Warning	OAX	Saunders	19 hr
Jul 2, 1:18 AM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy, Saunders	42 min
Jul 2, 1:54 AM CDT	River Flood Warning	OAX	Butler, Polk, Seward	42 hr
Jul 2, 2:00 AM CDT	River Flood Warning	OAX	Seward	3 days
Jul 2, 2:15 AM CDT	Flash Flood Warning EmergencyCatastrophic damage threat	OAX	Cass	3 hr
Jul 2, 2:35 AM CDT	Areal Flood Warning	OAX	Butler, Cass, Douglas, Lancaster, Otoe, Saline and 3 more	17 hr
Jul 2, 4:47 AM CDT	River Flood Warning	OAX	Cass	16 hr
Jul 2, 4:47 AM CDT	River Flood Warning	OAX	Seward	28 hr
Jul 2, 5:22 AM CDT	River Flood Warning	OAX	Saunders	28 hr
Jul 2, 8:03 AM CDT	Areal Flood Advisory	OAX	Butler	14 hr
Jul 2, 11:02 AM CDT	Special Weather Statement	OAX	Saline	13 min
Jul 2, 11:15 AM CDT	Special Weather Statement	OAX	Seward	15 min
Jul 2, 11:24 AM CDT	Special Weather Statement	OAX	Lancaster	21 min
Jul 2, 11:33 AM CDT	Severe Thunderstorm Warning	OAX	Lancaster	18 min

Nearby

Flash Flood Warnings in Nebraska, 2024 Every flash flood warning in 2024

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.