Alert archive / Nebraska / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 355, NWS Omaha, NE

September 19, 2014Cedar County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Sep 19, 2014, 9:59 PM CDT for Cedar County, Nebraska. It was in force for 26 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: Sep 19, 2014, 9:59 PM CDT (02:59 UTC)
Expired: Sep 19, 2014, 10:25 PM CDT
In force: 26 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Cedar County, NE

The radar

The Sioux Falls radar (KFSD), 118 km from the middle of the area, began a volume at 03:01 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 nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 3.0 hours before the alert went out and 160 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: 1032 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 1892 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 254 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

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 Sep 19, 6:30 PM CDT, 3 hours 29 minutes earlier.

Area forecast discussion, Sep 19, 6:30 PM CDT, 3 hours 29 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
630 PM CDT FRI SEP 19 2014

.SHORT TERM...(TONIGHT THROUGH MONDAY)
ISSUED AT 148 PM CDT FRI SEP 19 2014

COLD FRONT WILL MOVE INTO THE THE REGION TONIGHT BRINGING PRECIP
CHANCES WITH IT. FRONT THEN MOVES SOUTH OF THE REGION THROUGH THE
DAY SATURDAY WITH PRECIP ALONG/SOUTH OF I80 MOVING OUT BY SATURDAY
EVENING. BEST CHANCES FOR LIKELY PRECIP APPEAR TO BE TONIGHT
ALONG/NORTH OF I80. PRECIP AMOUNTS DON'T LOOK THAT IMPRESSIVE WITH
AMOUNTS GENERALLY LESS THAN ONE QUARTER OF AN INCH.

A SECONDARY REINFORCING COOL FRONT ARRIVE SATURDAY NIGHT BUT
REALLY NO MOISTURE WITH IT...BUT JUST A RETURN TO COOLER THAN
NORMAL TEMPS FOR SUNDAY/MONDAY WITH NORTHERLY FLOW...BUT RETURN TO
SOUTHERLY FLOW AHEAD OF THE NEXT SYSTEM MONDAY AFTERNOON.

.LONG TERM...(MONDAY NIGHT THROUGH FRIDAY)
ISSUED AT 148 PM CDT FRI SEP 19 2014

MODELS ARE IN DECENT AGREEMENT SHOWING THE LOW THAT'S CURRENTLY
ACROSS THE WEST COAST NOW WILL EVENTUALLY CROSS THE ROCKIES.
AFOREMENTIONED RETURN SOUTHERLY FLOW WILL TAP INTO FAIRLY MOIST
AREA ACROSS THE FAR SOUTHERN PLAINS AND ADVECT THAT NORTHWARD.
PRECIP CHANCE INCREASE ACROSS EASTERN NEBRASKA MONDAY NIGHT...THEN
ACROSS THE ENTIRE AREA TUESDAY THROUGH WEDNESDAY AS THIS UPPER
SYSTEM SLOWLY MOVES THROUGH THE REGION. BULK OF MOISTURE PUSHES
EAST BY THURSDAY...BUT ISOLATED SHOWERS COULD REMAIN...AND BY THEN
MODEL SOLUTIONS BEGIN TO DIVERGE ENOUGH TO HAVE OVERALL LOW
CONFIDENCE BY NEXT FRIDAY TO GO DRY UNTIL BETTER CONTINUITY
DEVELOPS.

&&

.AVIATION...(00Z TAFS FOR KOFK...KLNK AND KOMA.)
ISSUED AT 630 PM CDT FRI SEP 19 2014

EXPECT THAT PCPN WILL DEVELOP FIRST IN NERN NE AND AFFECT KOFK...
THEN DEVELOP SEWD OVERNIGHT TOWARD KOMA AND KLNK. CEILINGS AROUND
3000 FEET OR SO SEEM PSBL AND DID MENTION SOME VSBYS AROUND 4
MILES IN TSRA. SOUTHERLY WINDS SHOULD SHIFT TO THE NORTHWEST WITH
THE FRONT.

&&

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

SHORT TERM...DEWALD
LONG TERM...DEWALD
AVIATION...MILLER

Hazardous weather outlook, Sep 19, 4:27 PM CDT, 5 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
427 PM CDT FRI SEP 19 2014

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-201130-
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-
427 PM CDT FRI SEP 19 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 SATURDAY

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER
NORTHEAST NEBRASKA THIS EVENING ALONG A COLD FRONT DROPPING INTO
THE CENTRAL PLAINS. THE THUNDERSTORM ACTIVITY WILL INCREASE IN
AREAL COVERAGE THEN AS IT EXPANDS SOUTHWARD OVER THE REST OF THE
OUTLOOK AREA OVERNIGHT. SOME EVENING STORMS MAY BE STRONG TO
MARGINALLY SEVERE WITH HAIL AND GUSTY WINDS THE PRIMARY HAZARDS.

TOWARD DAYBREAK SATURDAY MORNING...THE THUNDERSTORM ACTIVITY IS
EXPECTED TO BE LOCATED MAINLY SOUTH OF THE I-80 CORRIDOR...AND
SHOULD BE CLEAR OF THE OUTLOOK AREA BY LATE SATURDAY AFTERNOON.

.DAYS TWO THROUGH SEVEN...SATURDAY NIGHT THROUGH FRIDAY

THUNDERSTORM CHANCES RETURN TO THE AREA THROUGH THE MAJORITY OF
NEXT WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT LIKELY THROUGH SATURDAY.

In the hours before

Special weather statement, Sep 19, 9:23 PM CDT, 36 minutes before

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Local storm report, Sep 19, 9:38 PM CDT, 21 minutes before

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Local storm report, Sep 19, 9:44 PM CDT, 15 minutes before

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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Local storm report, Sep 19, 9:54 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
954 PM CDT FRI SEP 19 2014

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

0940 PM     HAIL             BLOOMFIELD              42.60N 97.65W
09/19/2014  E1.75 INCH       KNOX               NE   LAW ENFORCEMENT

            REPORT FROM LOCAL POLICE DEPT.

&&

MILLER

Special weather statement, Sep 19, 9:55 PM CDT, 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
955 PM CDT FRI SEP 19 2014

NEZ011-012-200400-
CEDAR NE-KNOX NE-
955 PM CDT FRI SEP 19 2014

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CEDAR AND EASTERN KNOX
COUNTIES UNTIL 1100 PM CDT...

AT 955 PM CDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR MASKELL TO 7 MILES
WEST OF HARTINGTON...AND MOVING EAST AT 35 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
HARTINGTON AND OBERT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN OMAHA.

&&

LAT...LON 4263 9702 4257 9758 4272 9701
TIME...MOT...LOC 0255Z 260DEG 33KT 4272 9701 4261 9742

DEE

Local storm report, Sep 19, 9:57 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
957 PM CDT FRI SEP 19 2014

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

0957 PM     HAIL             BLOOMFIELD              42.60N 97.65W
09/19/2014  E0.75 INCH       KNOX               NE   CO-OP OBSERVER

            DIME SIZE HAIL

&&

MILLER

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 19, 8:18 PM CDT	Special Weather Statement	OAX	Cedar	42 min
Sep 19, 8:42 PM CDT	Special Weather Statement	OAX	Cedar	33 min
Sep 19, 8:49 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	26 min
Sep 19, 9:03 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Knox	27 min
Sep 19, 9:23 PM CDT	Special Weather Statement	OAX	Cedar	37 min
Sep 19, 9:26 PM CDT	Severe Thunderstorm Warning	OAX	Cedar, Knox	34 min
Sep 19, 9:55 PM CDT	Special Weather Statement	OAX	Cedar	65 min
Sep 19, 10:25 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	10 min
Sep 19, 10:54 PM CDT	Severe Thunderstorm Warning	OAX	Cedar	17 min
Sep 19, 10:58 PM CDT	Areal Flood Advisory	OAX	Cedar, Knox	5 hr
Sep 20, 2:21 AM CDT	Special Weather Statement	OAX	Boone, Platte	39 min
Sep 20, 3:10 AM CDT	Special Weather Statement	OAX	Colfax	50 min
Sep 20, 4:46 AM CDT	Special Weather Statement	OAX	Butler, Douglas, Sarpy, Saunders	44 min
Sep 20, 5:34 AM CDT	Special Weather Statement	OAX	Cass, Lancaster, Otoe, Sarpy, Seward	56 min
Sep 20, 7:47 AM CDT	Special Weather Statement	OAX	Cass	43 min
Sep 20, 10:11 AM CDT	Special Weather Statement	OAX	Johnson, Nemaha	49 min
Sep 20, 10:31 AM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Richardson	29 min
Sep 20, 11:03 AM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Richardson	27 min
Sep 20, 11:54 AM CDT	Special Weather Statement	OAX	Pawnee	36 min
Sep 20, 2:35 AM CDT	Special Weather Statement	OAX	Harrison	40 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2014 Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.