Alert archive / Nebraska / Flash Flood Watches in 2007

Flash Flood Watch 2, NWS Omaha, NE

April 24, 200724 counties in Nebraska; 8 counties in Iowa

NWS Omaha, NE issued this flash flood watch at Apr 24, 2007, 3:27 PM CDT for 24 counties in Nebraska; 8 counties in Iowa. It took effect at Apr 24, 2007, 5:00 PM CDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Apr 24, 2007, 3:27 PM CDT (20:27 UTC)
In effect from: Apr 24, 2007, 5:00 PM CDT
Expired: Apr 25, 2007, 4:19 AM CDT
In force: 11 hr
Issued by: NWS Omaha, NE
Flood severity: None

All 32 counties

Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Shelby County, IA, Antelope County, NE, Boone County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Knox County, NE, Lancaster County, NE, Madison County, NE, Otoe County, NE, Pierce County, NE, Platte County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE

The radar

The Omaha radar (KOAX), 29 km from the middle of the area, began a volume at 20:30 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 watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

Hazardous weather outlook, Apr 23, 6:01 PM CDT, 21 hours 26 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
601 PM CDT MON APR 23 2007

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-241100-
ANTELOPE-BOONE-BURT-BUTLER-CASS-CEDAR-COLFAX-CUMING-DODGE-DOUGLAS-
FREMONT IA-GAGE-HARRISON IA-JEFFERSON-JOHNSON-KNOX-LANCASTER-MADISON-
MILLS IA-MONONA IA-MONTGOMERY IA-NEMAHA-OTOE-PAGE IA-PAWNEE-PIERCE-
PLATTE-POTTAWATTAMIE IA-RICHARDSON-SALINE-SARPY-SAUNDERS-SEWARD-
SHELBY IA-STANTON-THURSTON-WASHINGTON-WAYNE-
601 PM CDT MON APR 23 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA
AND SOUTHWEST IOWA.

.DAY ONE...TONIGHT AND TUESDAY

SEVERE THUNDERSTORMS ARE POSSIBLE TUESDAY AFTERNOON MAINLY OVER
SOUTHEAST NEBRASKA...SOUTH OF A OMAHA TO LINCOLN LINE.  THE MAIN
HAZARDS ARE EXPECTED TO BE LARGE HAIL AND DAMAGING WINDS.  A
VIGOROUS LOW PRESSURE SYSTEM IS FORECAST TO MOVE INTO THE PLAINS
STATES LATE TONIGHT INTO TUESDAY.  A SURFACE WARM FRONT IS EXPECTED
TO BE ALONG THE KANSAS NEBRASKA BORDER.  SEVERE STORMS ARE FORECAST
TO DEVELOP ALONG AND NORTH OF THE FRONT.

WIDESPREAD RAIN AND EMBEDDED THUNDERSTORMS WILL BEGIN LATE TONIGHT
ACROSS THE AREA. THIS ACTIVITY IS EXPECTED TO CONTINUE DURING THE
DAY ON TUESDAY.  SOME AREAS MAY EXPERIENCE LOCAL FLOODING FROM
HEAVIER RAINFALL.

.DAYS TWO THROUGH SEVEN...TUESDAY NIGHT THROUGH MONDAY

SEVERE THUNDERSTORMS MAY CONTINUE ON TUESDAY EVENING SOUTH OF A
OMAHA TO COLUMBUS LINE.  IN ADDITION...WIDESPREAD RAINFALL WILL
CONTINUE WHICH MAY PRODUCE LOCALIZED FLOODING. RAINFALL
IS EXPECTED TO CONTINUE ACROSS THE AREA THROUGH WEDNESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION MAY BE NEEDED TUESDAY AFTERNOON...
PRIMARILY SOUTH OF A OMAHA TO LINCOLN LINE.

SMITH

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 24, 1:53 PM CDT	Severe Thunderstorm Warning	OAX	Gage	37 min

Nearby

Flash Flood Watches in Nebraska, 2007 Flash Flood Watches in Iowa, 2007 Every flash flood watch in 2007

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.