Alert archive / Nebraska / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 105, NWS Omaha, NE

June 6, 20184 counties in Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 6, 2018, 11:57 PM CDT for 4 counties in Nebraska. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 6, 2018, 11:57 PM CDT (04:57 UTC)
Expired: Jun 7, 2018, 12:30 AM CDT
In force: 33 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Johnson County, NE, Nemaha County, NE, Pawnee County, NE, Richardson County, NE

The radar

The Omaha radar (KOAX), 122 km from the middle of the area, began a volume at 05:01 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 6, 3:23 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 5.0 hours before the alert went out and 122 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2529 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 2020 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 0 m²/s²
0-3 km storm-relative helicity: 38 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jun 6, 11:48 PM CDT, 9 minutes earlier.

Area forecast discussion, Jun 6, 11:48 PM CDT, 9 minutes before

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Hazardous weather outlook, Jun 6, 3:49 PM CDT, 8 hours 8 minutes before

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
349 PM CDT Wed Jun 6 2018

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-071100-
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-
349 PM CDT Wed Jun 6 2018

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 Thursday

Isolated to scattered severe storms will be possible tonight. The
primary hazards will be damaging winds,large hail, lightning and
locally heavy rainfall.

.DAYS TWO THROUGH SEVEN...Thursday night through Wednesday

On and off thunderstorm chances will continue into early next
week with isolated severe weather possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed tonight.

In the hours before

Local storm report, Jun 6, 10:12 PM CDT, 1 hour 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1012 PM CDT WED JUN 6 2018

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

0925 PM     TSTM WND DMG     6 SSE FORT CALHOUN      41.38N 95.97W
06/06/2018                   DOUGLAS            NE   PUBLIC

            TREES BLOWN DOWN.

&&

Local storm report, Jun 6, 10:14 PM CDT, 1 hour 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1014 PM CDT WED JUN 6 2018

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

0545 PM     HAIL             PETERSBURG              41.56N 98.07W
06/06/2018  M1.00 INCH       BOONE              NE   CO-OP OBSERVER

&&

Local storm report, Jun 6, 10:15 PM CDT, 1 hour 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1015 PM CDT WED JUN 6 2018

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

1014 PM     TSTM WND GST     1 NE OFFUTT AFB         41.12N 95.91W
06/06/2018  M56 MPH          SARPY              NE   ASOS

&&

Local storm report, Jun 6, 10:27 PM CDT, 1 hour 30 minutes before

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Local storm report, Jun 6, 10:40 PM CDT, 1 hour 17 minutes before

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Special weather statement, Jun 6, 10:47 PM CDT, 1 hour 10 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 7:05 PM CDT	Special Weather Statement	OAX	Butler, Saunders	40 min
Jun 6, 7:11 PM CDT	Flash Flood Warning	OAX	Cuming, Dodge	4 hr
Jun 6, 7:22 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Madison, Pierce, Stanton, Wayne	38 min
Jun 6, 7:32 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Platte, Saunders	43 min
Jun 6, 7:44 PM CDT	Special Weather Statement	OAX	Platte	46 min
Jun 6, 7:46 PM CDT	Severe Thunderstorm Warning	OAX	Platte	29 min
Jun 6, 7:56 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Saunders	49 min
Jun 6, 7:58 PM CDT	Special Weather Statement	OAX	Wayne	47 min
Jun 6, 8:34 PM CDT	Areal Flood Advisory	OAX	Colfax, Platte	2 hr
Jun 6, 8:41 PM CDT	Severe Thunderstorm Warning	OAX	Butler, Lancaster, Saunders, Seward	34 min
Jun 6, 8:46 PM CDT	Severe Thunderstorm Warning	OAX	Boone, Platte	29 min
Jun 6, 9:28 PM CDT	Flash Flood Warning	OAX	Boone, Platte	3 hr
Jun 6, 9:30 PM CDT	Severe Thunderstorm Warning	OAX	Boone	30 min
Jun 6, 9:39 PM CDT	Severe Thunderstorm Warning	OAX	Douglas	14 min
Jun 6, 10:07 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy	23 min
Jun 6, 10:18 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy	27 min
Jun 6, 10:22 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy	23 min
Jun 6, 10:47 PM CDT	Special Weather Statement	OAX	Cass, Otoe	43 min
Jun 6, 11:13 PM CDT	Severe Thunderstorm Warning	OAX	Otoe	32 min
Jun 6, 11:24 PM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Otoe	36 min
Jun 7, 12:30 AM CDT	Special Weather Statement	OAX	Pawnee, Richardson	30 min
Jun 7, 12:47 AM CDT	Special Weather Statement	OAX	Saunders	28 min
Jun 7, 1:08 AM CDT	Special Weather Statement	OAX	Lancaster	52 min
Jun 7, 1:24 AM CDT	Special Weather Statement	OAX	Lancaster	51 min
Jun 7, 1:27 AM CDT	Special Weather Statement	OAX	Pawnee	48 min
Jun 7, 1:38 AM CDT	Areal Flood Advisory	OAX	Pawnee	3 hr
Jun 7, 4:02 AM CDT	Special Weather Statement	OAX	Boone, Madison, Pierce	43 min
Jun 7, 4:40 AM CDT	Special Weather Statement	OAX	Madison, Pierce, Platte, Stanton, Wayne	65 min
Jun 6, 7:11 PM CDT	Special Weather Statement	OAX	Shelby	49 min
Jun 6, 7:59 PM CDT	Severe Thunderstorm Warning	OAX	Monona	46 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2018 Every severe thunderstorm warning in 2018

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.