Alert archive / Nebraska / Areal Flood Warnings in 2019

Areal Flood Warning 21, NWS Hastings, NE

May 28, 2019Polk County, Nebraska

NWS Hastings, NE issued this areal flood warning at May 28, 2019, 11:31 PM CDT for Polk County, Nebraska. It was in force for 60 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
May 28, 2019, 11:31 PM CDT (04:31 UTC)
Expired
May 31, 2019, 11:30 AM CDT
In force
60 hr
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Flood severity
None

County Polk County, NE

The radar

The Omaha radar (KOAX), 102 km from the middle of the area, began a volume at 04:30 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.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 4.5 hours before the alert went out and 101 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2019-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2019-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
645 m above ground
0-6 km bulk shear
80 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hastings, NE wrote its last area forecast discussion before this areal flood warning went out at May 28, 6:35 PM CDT, 4 hours 56 minutes earlier.

Area forecast discussion, May 28, 6:35 PM CDT, 4 hours 56 minutes before
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Hazardous weather outlook, May 28, 3:31 PM CDT, 8 hours before
Hazardous Weather Outlook
National Weather Service Hastings NE
331 PM CDT Tue May 28 2019

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
291200-
Phillips-Smith-Jewell-Rooks-Osborne-Mitchell-Valley-Greeley-Nance-
Sherman-Howard-Merrick-Polk-Dawson-Buffalo-Hall-Hamilton-York-
Gosper-Phelps-Kearney-Adams-Clay-Fillmore-Furnas-Harlan-Franklin-
Webster-Nuckolls-Thayer-
331 PM CDT Tue May 28 2019

This Hazardous Weather Outlook is for south central Nebraska and
portions of north central Kansas.

.DAY ONE...This Afternoon and Tonight.

Due to several inches of rain over the past few days, various
Flood Warnings and Flood Advisories are in effect across the
outlook area. Please refer to specific Warning and Advisory
statements for further details. Additional isolated heavy rain is
possible south and east of the Tri-Cities this afternoon and
evening, and mainly north of the Tri-Cities tonight. Any rain on
already saturated soils could lead to additional or worse flooding.

Thunderstorm chances remain in the forecast through tonight. The
greatest risk for severe weather is south of a line from Arapahoe
to York, mainly from 4pm until 10pm. Potential hazards include
large hail up to at least golf ball size hail and damaging wind
gusts up to 70mph. A tornado or two can't be ruled out from near
Plainville to Hebron, but this potential is low. Other strong to
marginally severe storms are possible mainly north of the Tri-
Cities overnight, with the main hazard being nickel to quarter
size hail.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

It is likely that some Flood Warning and Flood Advisories will
continue through mid week, especially along area rivers. Please
refer to these specific Warning and Advisory statements for further
details.

There are several chances for rain and thunderstorms off and on
next several days, but the risk for heavy rain and severe
thunderstorms is low.

For Friday through Monday, it is too soon to confidently assess
the potential for severe storms, but nothing currently appears as
widespread as our recent chances have been.

.SPOTTER INFORMATION STATEMENT...

Spotter activation for severe storms possible today, especially
between 4 and 10 PM. In addition, any reports of flooding would be
greatly appreciated.

&&

More information may be obtained at the following web page:
   https://www.weather.gov/hastings

Thies

In the hours before

Local storm report, May 28, 6:16 PM CDT, 5 hours 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
616 PM CDT TUE MAY 28 2019

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

0550 PM     TORNADO          5 SW TIPTON             39.28N 98.53W
05/28/2019                   OSBORNE            KS   911 CALL CENTER

            DAMAGE REPORTED. NO DETAILS ATTM. TIME ESTD
            FM RADAR.

&&

KELLEY
Local storm report, May 28, 6:18 PM CDT, 5 hours 13 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
618 PM CDT TUE MAY 28 2019

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

0612 PM     TORNADO          3 S JEWELL              39.63N 98.16W
05/28/2019                   JEWELL             KS   TRAINED SPOTTER

            TORNADO WAS BECOMING RAIN WRAPPED AND
            DIFFICULT TO SEE.

&&

JCB
Local storm report, May 28, 6:23 PM CDT, 5 hours 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
623 PM CDT TUE MAY 28 2019

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

0620 PM     TORNADO          5 S FORMOSO             39.71N 97.99W
05/28/2019                   JEWELL             KS   TRAINED SPOTTER

&&

JCB
Local storm report, May 28, 6:29 PM CDT, 5 hours 2 minutes before
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Local storm report, May 28, 6:31 PM CDT, 5 hours before
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Local storm report, May 28, 6:40 PM CDT, 4 hours 51 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 7:14 PM CDTSpecial Weather StatementGIDThayer31 min
May 29, 6:26 AM CDTAreal Flood WarningGIDBuffalo, Dawson30 hr
May 29, 9:07 AM CDTAreal Flood WarningGIDMerrick, Nance36 hr
May 28, 7:00 PM CDTSevere Thunderstorm WarningGIDOsborne, Rooks45 min
May 28, 7:33 PM CDTSevere Thunderstorm WarningGIDMitchell, Osborne42 min
May 28, 7:53 PM CDTSpecial Weather StatementGIDRooks37 min
May 28, 8:16 PM CDTSpecial Weather StatementGIDMitchell44 min

Nearby

Areal Flood Warnings in Nebraska, 2019Every areal flood warning in 2019

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.