Alert archive / Iowa / River Flood Warnings in 2014

River Flood Warning 50, NWS Omaha, NE

September 1, 2014Harrison County, Iowa

NWS Omaha, NE issued this river flood warning at Sep 1, 2014, 1:46 AM CDT for Harrison County, Iowa. It was in force for 26 hr.

The area

The counties it named.

The facts

Issued: Sep 1, 2014, 1:46 AM CDT (06:46 UTC)
Expired: Sep 2, 2014, 3:30 AM CDT
In force: 26 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: Minor

County Harrison County, IA

The radar

The Omaha radar (KOAX), 61 km from the middle of the area, began a volume at 06:49 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 river

Written for the forecast point Boyer River at Logan (LGNI4).

Action stage: 19 ft
Minor stage: 21 ft
Moderate stage: 22 ft
Major stage: 25 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06609500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river 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 river flood warning went out at Aug 31, 11:43 PM CDT, 2 hours 3 minutes earlier.

Area forecast discussion, Aug 31, 11:43 PM CDT, 2 hours 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1143 PM CDT SUN AUG 31 2014

.UPDATE...
ISSUED AT 916 PM CDT SUN AUG 31 2014

SEVERE WEATHER THREAT HAS WANED ACROSS OUR CWA AS LINE OF STORMS
HAS PUSHED EAST OF OUR AREA. LINGERING SHOWERS OR THUNDERSTORMS
MAY AFFECT SOUTHEAST NEBRASKA AND SOUTHWEST IOWA FOR A TIME THIS
EVENING. THEN OVERNIGHT...ADDITIONAL SHOWERS OR ISOLATED STORMS
WILL BE POSSIBLE IN OVERRUNNING REGIME UNDER UPPER TROUGH SWINGING
THROUGH THE PLAINS. ONE WAVE IN THIS FLOW WAS TRIGGERING STORMS
IN WESTERN NEBRASKA NOW...AND HRRR/RAP MODELS INDICATE THOSE WOULD
APPROACH NORTHEAST NEBRASKA NEAR 06Z THEN SWEEP SOUTHEAST. SEVERE
STORMS ARE CERTAINLY NOT ANTICIPATED WITH THESE.

&&

.SHORT TERM...(TONIGHT THROUGH WEDNESDAY)
ISSUED AT 245 PM CDT SUN AUG 31 2014

CONVECTION LOOKS LIKELY FOR THE AREA TONIGHT AS A COLD FRONT
CURRENTLY ACROSS CENTRAL NEBRASKA INTO EXTREME EASTERN SOUTH
DAKOTA MOVES EAST INTO MINNESOTA AND IOWA. LATEST SHORT RANGE
MODELS HAVE MOST OF THE ACTIVITY EAST AND SOUTH OF THE AREA
BY 06Z. WEAK HIGH PRESSURE MOVES INTO THE AREA ON MONDAY BUT
SOME CHANCE OF MORE CONVECTION FOR NORTHERN PARTS OF THE AREA
MONDAY EVENING AS ANOTHER WAVE MOVES ACROSS THE REGION.

WARMER TEMPERATURES RETURN TUESDAY INTO WEDNESDAY AS BROAD RIDGE
ACROSS THE SOUTH BUILDS A BIT TO THE NORTH. SOME SLIGHT POPS IN
PLACE WEDNESDAY NIGHT FOR FAR SOUTH ASSOCIATED WITH WARM
ADVECTION ZONE ACROSS EASTERN KANSAS AND WESTERN MISSOURI.

.LONG TERM...(WEDNESDAY NIGHT THROUGH SUNDAY)
ISSUED AT 245 PM CDT SUN AUG 31 2014

ANOTHER COLD FRONT MOVES INTO THE AREA ON THURSDAY WITH POPS
INCREASING INTO THURSDAY NIGHT FOR THE AREA AND CONTINUING INTO
FRIDAY FOR SOUTHERN HALF OF THE CWA AS FRONT SAGS SLOWLY SOUTH.
EXPECT RAIN TO STAY SOUTH OF THE AREA FRIDAY NIGHT INTO THE
WEEKEND AS HIGH PRESSURE BUILDS INTO THE REGION ALONG WITH COOLER
TEMPERATURES.

&&

.AVIATION...(06Z TAFS FOR KOFK...KLNK AND KOMA.)
ISSUED AT 1142 PM CDT SUN AUG 31 2014

BROKEN MID LEVEL CLOUDS WILL REMAIN OVER EASTERN NEBRASKA TAF
SITES. COLD FRONT MOVING THROUGH THE AREA WILL TURN WINDS TO THE
NORTHWEST OVERNIGHT. AREAS OF MVFR FOG COULD DEVELOP BETWEEN 10Z
AND 14Z. THEN EXPECT NORTHWEST WINDS NEAR 10KT AND SCATTERED TO
BROKEN HIGH CLOUDS THROUGH THE DAY MONDAY.

&&

.OAX WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
IA...NONE.
&&

UPDATE...DERGAN
SHORT TERM...FOBERT
LONG TERM...FOBERT
AVIATION...DERGAN

Hazardous weather outlook, Aug 31, 9:24 PM CDT, 4 hours 22 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
924 PM CDT SUN AUG 31 2014

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-011630-
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-
924 PM CDT SUN AUG 31 2014

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

THERE IS A SMALL CHANCE FOR THUNDERSTORMS ACROSS THE OUTLOOK AREA
OVERNIGHT THROUGH EARLY MONDAY MORNING. HOWEVER ADDITIONAL SEVERE
STORMS ARE NOT EXPECTED.

MINOR FLOODING IS STILL POSSIBLE ON SMALL STREAMS AS RUNOFF FROM
EARLY RAINS SLOWLY SUBSIDES.

.DAYS TWO THROUGH SEVEN...MONDAY NIGHT THROUGH SUNDAY

THERE IS A CHANCE FOR THUNDERSTORMS MONDAY NIGHT FOR NORTHERN PARTS
OF THE AREA AND FOR THE SOUTH TUESDAY NIGHT. MORE WIDESPREAD
STORMS ARE POSSIBLE THURSDAY NIGHT INTO FRIDAY AS ANOTHER COLD
FRONT MOVES THROUGH THE REGION.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTERS NOT BE NEEDED TONIGHT OR MONDAY.

In the hours before

Local storm report, Aug 31, 7:49 PM CDT, 5 hours 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
749 PM CDT SUN AUG 31 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0730 PM     HAIL             WEEPING WATER           40.87N 96.14W
08/31/2014  M1.00 INCH       CASS               NE   LAW ENFORCEMENT

&&

VDEWALD

Special weather statement, Aug 31, 8:09 PM CDT, 5 hours 37 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
809 PM CDT SUN AUG 31 2014

NEZ093-010200-
RICHARDSON NE-
809 PM CDT SUN AUG 31 2014

...SIGNIFICANT WEATHER ADVISORY FOR RICHARDSON COUNTY UNTIL 900 PM
CDT...

AT 808 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
BERN...OR 10 MILES NORTHWEST OF SABETHA...MOVING EAST AT 35 MPH.

HALF INCH HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
FALLS CITY...HUMBOLDT...VERDON...RULO...DAWSON...SALEM...PRESTON...
BARADA...THE HIGHWAY 75 AND 8 JUNCTION AND CAMP CORNHUSKER.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT MONDAY MORNING FOR
.

LAT...LON 4015 9601 4025 9551 4021 9548 4019 9548
      4011 9539 4008 9539 4006 9542 4004 9541
      4003 9540 4003 9536 4001 9531 4000 9540
      4000 9601
TIME...MOT...LOC 0108Z 250DEG 22KT 4004 9591

CHERMOK

Local storm report, Aug 31, 8:15 PM CDT, 5 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
815 PM CDT SUN AUG 31 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0814 PM     TSTM WND GST     6 NNE NEBRASKA CITY     40.75N 95.82W
08/31/2014  E60 MPH          FREMONT            IA   TRAINED SPOTTER

            ALSO PENNY SIZE HAIL.

&&

VDEWALD

Local storm report, Aug 31, 8:22 PM CDT, 5 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
822 PM CDT SUN AUG 31 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 PM     HAIL             3 E BENNET              40.68N 96.45W
08/31/2014  M1.75 INCH       OTOE               NE   PUBLIC

&&

VDEWALD

Local storm report, Aug 31, 8:43 PM CDT, 5 hours 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
843 PM CDT SUN AUG 31 2014

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 PM     TSTM WND GST     2 SE EARLING            41.76N 95.39W
08/31/2014  E65 MPH          SHELBY             IA   EMERGENCY MNGR

&&

VDEWALD

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 31, 7:01 PM CDT	Severe Thunderstorm Warning	OAX	Washington	44 min
Aug 31, 7:07 PM CDT	Special Weather Statement	OAX	Gage	23 min
Aug 31, 7:11 PM CDT	Special Weather Statement	OAX	Cass	34 min
Aug 31, 7:28 PM CDT	Special Weather Statement	OAX	Cass, Otoe, Sarpy	32 min
Aug 31, 7:31 PM CDT	Areal Flood Advisory	OAX	Burt	5 hr
Aug 31, 7:47 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Otoe	28 min
Aug 31, 8:09 PM CDT	Special Weather Statement	OAX	Richardson	51 min
Sep 1, 1:48 AM CDT	River Flood Warning	OAX	Seward	27 hr
Aug 31, 7:25 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Shelby	50 min
Aug 31, 7:59 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie, Shelby	46 min
Aug 31, 8:03 PM CDT	Tornado Warning	OAX	Fremont	27 min
Aug 31, 8:19 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	26 min
Aug 31, 8:44 PM CDT	Severe Thunderstorm Warning	OAX	Page	31 min
Sep 1, 5:33 AM CDT	Areal Flood Warning	OAX	Pottawattamie, Shelby	6 hr
Sep 1, 6:54 AM CDT	River Flood Warning	OAX	Pottawattamie	14 hr
Sep 1, 1:27 PM CDT	Areal Flood Warning	OAX	Harrison	6 hr
Sep 1, 2:28 PM CDT	River Flood Warning	OAX	Fremont	47 hr

Nearby

River Flood Warnings in Iowa, 2014 Every river flood warning in 2014

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; the gauge from the NWS water service and the USGS.