Alert archive / Nebraska / Special Weather Statements in 2014

Special Weather Statement, NWS Omaha, NE

August 19, 2014Nemaha County, Nebraska

NWS Omaha, NE issued this special weather statement at Aug 19, 2014, 3:10 AM CDT for Nemaha County, Nebraska. It was in force for 35 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 19, 2014, 3:10 AM CDT (08:10 UTC)
Expired: Aug 19, 2014, 3:45 AM CDT
In force: 35 min
Issued by: NWS Omaha, NE

County Nemaha County, NE

The radar

The Omaha radar (KOAX), 119 km from the middle of the area, began a volume at 08:10 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

Topeka, KS (KFOE), launched 00:00Z, 8.2 hours before the alert went out and 155 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: 1179 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 2106 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: -21 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 18, 11:45 PM CDT, 3 hours 25 minutes earlier.

Area forecast discussion, Aug 18, 11:45 PM CDT, 3 hours 25 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Hazardous weather outlook, Aug 18, 11:25 PM CDT, 3 hours 45 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1125 PM CDT MON AUG 18 2014

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-191830-
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-
1125 PM CDT MON AUG 18 2014

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

.DAY ONE...TONIGHT AND TUESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THERE IS A CHANCE OF THUNDERSTORMS TUESDAY NIGHT. SOME ISOLATED
SEVERE STORMS SEEM POSSIBLE. THESE WILL OCCUR ALONG AND NORTH OF
A WARM FRONT THAT WILL BE LIFTING NORTH THROUGH THE AREA.

SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE OFF AN ON FROM TUESDAY
WEDNESDAY INTO EARLY NEXT WEEK...AS A SERIES OF WEATHER
DISTURBANCES MOVE ACROSS THE REGION. LATER OUTLOOKS WILL ADDRESS
THE POTENTIAL FOR SEVERE STORMS IN THOSE PERIODS.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION SHOULD NOT BE NEEDED TONIGHT OR TUESDAY.

In the hours before

Special weather statement, Aug 19, 3:10 AM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
310 AM CDT TUE AUG 19 2014

NEZ091-190845-
NEMAHA NE-
310 AM CDT TUE AUG 19 2014

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN NEMAHA COUNTY UNTIL 345
AM CDT...

AT 310 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
PERU...OR 19 MILES WEST OF TARKIO...MOVING EAST AT 15 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
AUBURN...PERU...NEMAHA...BROWNVILLE AND BROWNVILLE STATE RECREATION
AREA.

LAT...LON 4031 9563 4032 9562 4032 9566 4038 9585
      4052 9579 4052 9566 4051 9570 4050 9568
      4047 9570 4046 9568 4046 9565 4043 9564
      4041 9566 4034 9562 4033 9563 4030 9556
      4028 9555 4029 9556
TIME...MOT...LOC 0810Z 285DEG 14KT 4045 9574

CHERMOK

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 3:17 AM CDT	Severe Thunderstorm Warning	OAX	Nemaha	28 min

Nearby

Special Weather Statements in Nebraska, 2014 Every special weather statement 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.