Alert archive / Nebraska / Flash Flood Warnings in 2020

Flash Flood Warning 11, NWS Omaha, NE

July 26, 2020Gage County, Pawnee County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jul 26, 2020, 6:27 PM CDT for Gage County, Pawnee County, Nebraska. It was in force for 6 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 26, 2020, 6:27 PM CDT (23:27 UTC)
Expired: Jul 27, 2020, 12:30 AM CDT
In force: 6 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

Counties Gage County, NE, Pawnee County, NE

The radar

The Omaha radar (KOAX), 125 km from the middle of the area, began a volume at 23:28 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.

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 26, 6:20 PM CDT, 7 minutes earlier.

Area forecast discussion, Jul 26, 6:20 PM CDT, 7 minutes before

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Hazardous weather outlook, Jul 26, 3:26 PM CDT, 3 hours 1 minute before

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
326 PM CDT Sun Jul 26 2020

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-271030-
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-
326 PM CDT Sun Jul 26 2020

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 Monday.

Thunderstorms with heavy rain and potentially damaging winds are
expected tonight, generally along and south of Interstate 80.
Storms in southeast Nebraska are expected to continue this
evening, with more storms developing near I-80 by early evening
and sagging slowly south overnight.

Rainfall rates well over 2 inches per hour are possible at times,
with storm total rains of 2 to 4 inches. Localized areas could
see higher totals.

The rain will slowly drift south and east of Nebraska and
southwest Iowa Monday morning.

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

Chance for thunderstorms return to the forecast Wednesday through
Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, Jul 26, 4:40 PM CDT, 1 hour 47 minutes before

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
440 PM CDT Sun Jul 26 2020

NEZ089-092-262215-
Gage NE-Pawnee NE-
440 PM CDT Sun Jul 26 2020

...SIGNIFICANT WEATHER ADVISORY FOR PAWNEE AND SOUTHEASTERN GAGE
COUNTIES UNTIL 515 PM CDT...

At 439 PM CDT, Doppler radar was tracking a strong thunderstorm 10
miles east of Blue Springs, or 17 miles southeast of Beatrice, moving
east at 35 mph.

Half inch hail, winds in excess of 40 mph and rainfall rates
near 2 inches per hour will be possible with this storm.

Locations impacted include...
Pawnee City, Table Rock, Summerfield, Du Bois, Barneston, Burchard,
Liberty and Steinauer.

LAT...LON 4021 9658 4026 9601 4000 9601 4000 9658
TIME...MOT...LOC 2139Z 262DEG 33KT 4013 9647

MILLER

Special weather statement, Jul 26, 4:43 PM CDT, 1 hour 44 minutes before

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
443 PM CDT Sun Jul 26 2020

NEZ088-089-262215-
Jefferson NE-Gage NE-
443 PM CDT Sun Jul 26 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN JEFFERSON AND
SOUTHWESTERN GAGE COUNTIES UNTIL 515 PM CDT...

At 443 PM CDT, Doppler radar was tracking a strong thunderstorm 6
miles south of Fairbury, or 16 miles northwest of Washington, moving
east at 25 mph.

Penny size hail, winds in excess of 40 mph and rainfall rates
near 2 inches per hour will be possible with this storm.

Locations impacted include...
Fairbury, Diller, Endicott, Steele City, Crystal Springs Campground,
Camp Jefferson, Rock Creek Station State Historical Park and Buckley
Creek Recreational Area.

LAT...LON 4000 9729 4014 9733 4015 9682 4000 9681
TIME...MOT...LOC 2143Z 278DEG 23KT 4004 9717

MILLER

Special weather statement, Jul 26, 5:06 PM CDT, 1 hour 21 minutes before

Special Weather Statement
National Weather Service Omaha/Valley Nebraska
506 PM CDT Sun Jul 26 2020

NEZ066-067-262230-
Cass NE-Lancaster NE-
506 PM CDT Sun Jul 26 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN LANCASTER AND
SOUTHWESTERN CASS COUNTIES UNTIL 530 PM CDT...

At 506 PM CDT, Doppler radar was tracking a strong thunderstorm over
Waverly, or 9 miles northeast of Lincoln, moving southeast at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Northeastern Lincoln, Waverly, Elmwood, Greenwood, Eagle, Davey and
Alvo.

This includes Interstate 80 in Nebraska between mile markers 405 and
418.

LAT...LON 4104 9678 4104 9650 4079 9623 4080 9657
TIME...MOT...LOC 2206Z 316DEG 27KT 4091 9654

MILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 3:31 AM CDT	Flash Flood Watch	OAX	Cass, Douglas, Gage, Jefferson, Johnson, Lancaster and 7 more	25 hr
Jul 26, 4:40 PM CDT	Special Weather Statement	OAX	Pawnee	35 min
Jul 26, 4:43 PM CDT	Special Weather Statement	OAX	Jefferson	32 min
Jul 26, 5:06 PM CDT	Special Weather Statement	OAX	Lancaster	24 min
Jul 26, 5:15 PM CDT	Areal Flood Advisory	OAX	Gage, Pawnee	4 hr
Jul 26, 5:22 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Pawnee	23 min
Jul 26, 6:35 PM CDT	Areal Flood Advisory	OAX	Gage, Jefferson	5 hr

Nearby

Flash Flood Warnings in Nebraska, 2020 Every flash flood warning in 2020

Sources

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