Alert archive / Nebraska / Flash Flood Warnings in 2026
Flash Flood Warning 2, NWS Omaha, NE
NWS Omaha, NE issued this flash flood warning at Apr 14, 2026, 11:54 PM CDT for Gage County, Johnson County, Nebraska. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 14, 2026, 11:54 PM CDT (04:54 UTC)
- Expired
- Apr 15, 2026, 2:46 AM CDT
- In force
- 3 hr
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Flood severity
- None
Counties Gage County, NE, Johnson County, NE
The radar
The Omaha radar (KOAX), 115 km from the middle of the area, began a volume at 04:57 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 4.9 hours before the alert went out and 115 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.
- Mixed-layer CAPE
- 342 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 2096 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 84 m²/s²
- 0-3 km storm-relative helicity
- 288 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
859
WGUS53 KOAX 150454
FFWOAX
NEC067-097-150800-
/O.NEW.KOAX.FF.W.0002.260415T0454Z-260415T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Omaha/Valley NE
1154 PM CDT Tue Apr 14 2026
The National Weather Service in Omaha/Valley has issued a
* Flash Flood Warning for...
Central Gage County in southeastern Nebraska...
West Central Johnson County in southeastern Nebraska...
* Until 300 AM CDT.
* At 1154 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2.5 inches of
rain have fallen. Additional rainfall amounts of 0.5 to 1.5 inches
are possible in the warned area. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Beatrice, Filley and Homestead National Historical Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4023 9679 4023 9686 4032 9688 4035 9673
4041 9652 4042 9646 4032 9646 4027 9657
FLASH FLOOD...RADAR INDICATED
$$
Petersen1 follow-up statement
889
WGUS73 KOAX 150746
FFSOAX
Flash Flood Statement
National Weather Service Omaha/Valley NE
246 AM CDT Wed Apr 15 2026
NEC067-097-150756-
/O.CAN.KOAX.FF.W.0002.000000T0000Z-260415T0800Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gage NE-Johnson NE-
246 AM CDT Wed Apr 15 2026
...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL GAGE AND WEST
CENTRAL JOHNSON COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 4023 9679 4023 9686 4032 9688 4035 9673
4041 9652 4042 9646 4032 9646 4027 9657
$$
CAWhat 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 Apr 14, 11:15 PM CDT, 39 minutes earlier. Its key messages:
- Strong to severe thunderstorms continue to impact portions of southeastern Nebraska and southwestern Iowa overnight. Large hail, gusty winds and torrential rainfall are expected. Training thunderstorms may result in flash flooding.
- Additional thunderstorm chances are expected Wednesday and again on Friday. Continue to monitor the forecast for severe weather potential.
- Much colder air arrives Friday night/Saturday morning. Lows both Saturday and Sunday mornings will fall into the 20s to low/mid-30s. Additionally, snow chances return to portions of the forecast area Friday night/Saturday morning.
Area forecast discussion, Apr 14, 11:15 PM CDT, 39 minutes before
Area Forecast Discussion National Weather Service Omaha/Valley NE 1115 PM CDT Tue Apr 14 2026 .KEY MESSAGES... - Strong to severe thunderstorms continue to impact portions of southeastern Nebraska and southwestern Iowa overnight. Large hail, gusty winds and torrential rainfall are expected. Training thunderstorms may result in flash flooding. - Additional thunderstorm chances are expected Wednesday and again on Friday. Continue to monitor the forecast for severe weather potential. - Much colder air arrives Friday night/Saturday morning. Lows both Saturday and Sunday mornings will fall into the 20s to low/mid-30s. Additionally, snow chances return to portions of the forecast area Friday night/Saturday morning. && .DISCUSSION... Issued at 1111 PM CDT Tue Apr 14 2026 The forecast period begins with ongoing showers in northern Nebraska and a few strong to severe thunderstorms along the Kansas/Nebraska border. These thunderstorms have been kicking off along a boundary extending from northwest of Concordia, Kansas to northwest of Fremont, Nebraska to north of Council Bluffs, Iowa. DCAPE values are currently in the 800-1100 J/kg range. SBCAPE values range between 1000 to nearly 3000 J/kg. ML lapse rates range from 7-8C/km with LL lapse rates around 6.5-7.5C/km. The main concerns with this line of storms will be large hail and gusty winds. Also of note with tonight's convection is the potential for some flooding. Precipitable water values are around 1.0+ inches along and south of the boundary. Training thunderstorms along and south of the boundary could result in some locations getting quite a bit of rainfall. We will continue to monitor the potential through the night. Heading into Wednesday morning, the low will continue to lift east- northeast. Additional shower/thunderstorm activity is expected as moisture wraps around the low. A few strong to severe thunderstorms will again be possible with hail and wind being the main threats. An isolated tornado cannot be entirely ruled out. Thursday continues to look like our best drying out day as a ridge moves over the region. WAA sets up with highs returning to the upper 70s to mid-80s. Friday continues to be a day to watch closely as we move closer to the event. Low pressure will develop on the lee side of the Rockies Thursday night. An attendant cold front will slide into the region through the day with much colder air pushing in behind it. The cold front appears to be moving into the region slightly faster than yesterday's runs. Areas ahead of the front can expect highs ranging from the mid-70s to low 80s, while areas behind it may struggle into the mid-50s. Warm Gulf air will be streaming into the region through the day. An upper trough will also be arriving heading into the latter part of the day, bringing additional lift to the region. Strong to severe storms are expected to develop along the cold front Friday afternoon and evening with all hazards possible. In addition to the potential for severe storms ahead of the cold front, areas in northern Nebraska behind the front may receive a rain/snow mix, becoming all snow. The snow chances will push south of I-80 heading into daybreak, with rain/snow possible for areas from Friend to Hallam to just east of Council Bluffs. Precipitation chances should decrease heading into the afternoon with just a few showers remaining. Anyone with agricultural interests or outdoor activities will want to monitor the weekend forecast as colder temperatures and potential wintry weather returns to the forecast. Saturday morning temperatures have trended slightly colder, with northern Nebraska expecting temps in the upper 20s. Areas closer to the Kansas/Nebraska/Iowa/Missouri border will fall into the low to mid- 30s. Sunday morning lows will be even colder with more widespread 20s for lows and most areas falling below the freezing mark. && .AVIATION /00Z TAFS THROUGH 00Z THURSDAY/... Issued at 626 PM CDT Tue Apr 14 2026 KOFK: VFR conditions persist at the terminal this evening. Expect the possibility for a few showers and maybe an isolated storm after 05Z. Additional chances for showers/storms will be possible Wednesday morning. Winds will remain out of the north or northwest through the TAF period. KOMA: VFR conditions continue for now at the terminal. West winds will shift to the north over the next couple of hours. Thunderstorm chances will increase after 02Z, continuing overnight. Ceilings are expected to lower to MVFR levels by daybreak, persisting through much of the morning before improving in the afternoon. Although not included in the TAF at this time, there is a small chance of a few thunderstorms coming into the vicinity of the terminal after 19Z Wednesday. There is still some uncertainty in where specifically they will develop and if it will impact the terminal directly. KLNK: VFR conditions persist through the evening. Winds are going to be shifting shortly at the terminal as an outflow boundary moves in from the north. Thunderstorms have developed west of the area, from west of KEAR to near KOLU. These storms will move to the northwest with additional storms firing up along a warm front. There is potential that a few of these storms do make it into the vicinity of KLNK, so a mention was added into prevailing conditions. For the rest of the forecast period, ceilings fall to MVFR levels. There is an additional chance of some showers or storms impacting the terminal after 18Z; however, due to TAF length, complexity, and still some uncertainty of where these showers/storms develop, the mention of them was omitted from prevailing conditions for now. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && DISCUSSION...ANW AVIATION...ANW
Hazardous weather outlook, Apr 14, 9:59 PM CDT, 1 hour 55 minutes before
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 959 PM CDT Tue Apr 14 2026 IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034- 042>045-050>053-065>068-078-088>093-160300- 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- 959 PM CDT Tue Apr 14 2026 This Hazardous Weather Outlook is for southwest Iowa, west central Iowa, east central Nebraska, northeast Nebraska and southeast Nebraska. .DAY ONE...Tonight. Strong to severe storms remain possible evening into tonight, mainly east of a line from Fairbury,NE, to Fremont, NE, to Woodbine, IA. Large hail and damaging winds will be the primary threats. A second round of storms will be possible Wednesday morning. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. Shower and storm chances continue Wednesday and Friday. Severe storms will be possible at times, especially across southeast Nebraska and southwest Iowa Friday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed at times this week, particularly Tuesday night and Friday.
In the hours before
Local storm report, Apr 14, 10:26 PM CDT, 1 hour 28 minutes before
Preliminary Local Storm Report
National Weather Service Omaha/Valley NE
1026 PM CDT Tue Apr 14 2026
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1017 PM Hail Beatrice 40.26N 96.74W
04/14/2026 M1.00 Inch Gage NE Trained Spotter
Spotter reported quarter-sized hail in
Beatrice, time estimated from radar.
&&
DMPThe office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 9:41 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Jefferson | 49 min |
| Apr 14, 10:28 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Johnson | 47 min |
| Apr 14, 11:09 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Jefferson, Saline | 51 min |
| Apr 14, 11:16 PM CDT | Flash Flood Warning | OAX | Johnson, Nemaha, Otoe | 3 hr |
| Apr 15, 12:07 AM CDT | Fire Weather Watch | OAX | Antelope, Boone, Cedar, Colfax, Cuming, Knox and 6 more | 21 hr |
| Apr 15, 9:07 AM CDT | Severe Thunderstorm Warning | OAX | Platte | 36 min |
| Apr 15, 9:47 AM CDT | Severe Thunderstorm Warning | OAX | Butler, Colfax | 29 min |
| Apr 15, 10:05 AM CDT | Severe Thunderstorm Warning | OAX | Dodge | 42 min |
| Apr 15, 10:35 AM CDT | Severe Thunderstorm Warning | OAX | Burt, Washington | 36 min |
| Apr 15, 12:52 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Seward | 38 min |
| Apr 15, 1:17 PM CDT | Severe Thunderstorm Warning | OAX | Butler, Lancaster, Saunders, Seward | 58 min |
| Apr 15, 2:10 PM CDT | Severe Thunderstorm Warning | OAX | Dodge, Douglas, Saunders, Washington | 37 min |
Nearby
Flash Flood Warnings in Nebraska, 2026Every flash flood warning in 2026
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.