Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 113, NWS Omaha, NE

August 14, 1997Cedar County, Pierce County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Aug 14, 1997, 8:11 PM CDT for Cedar County, Pierce County, Nebraska. It was in force for 59 min. 3 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Aug 14, 1997, 8:11 PM CDT (01:11 UTC)
Expired: Aug 14, 1997, 9:10 PM CDT
In force: 59 min
Issued by: NWS Omaha, NE
Area: Whole counties

Counties Cedar County, NE, Pierce County, NE

The radar

The Sioux Falls radar (KFSD), 141 km from the middle of the area, began a volume at 01:11 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.

What was reported inside it

Time	Report	Where	Remark
Aug 14, 8:20 PM CDT	Hail 2.75	Hartington, NE	A hailstorm moved across the central and southern portions of Cedar county causing significant damage or destruction to crops. It was estimated that there was 1.5 million dollars damage to the corn crop and 1.5 million dollars damage to the soybean crop. The
Aug 14, 8:51 PM CDT	Hail 0.75	Coleridge, NE
Aug 14, 9:00 PM CDT	Thunderstorm Wind 60	Pierce, NE	Roof blown off a trailer home along Highway 81 near the Pierce/Madison county line.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.2 hours before the alert went out and 151 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: 1810 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 837 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 101 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOMA 150112 RRA
SVROMA
NEC027-139-150210-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
811 PM CDT THU AUG 14 1997

* SEVERE THUNDERSTORM WARNING FOR
  CEDAR COUNTY IN NORTHEASTERN NEBRASKA
  PIERCE COUNTY IN NORTHEASTERN NEBRASKA

* UNTIL 910 PM CDT
 
AT 810 PM...A SEVERE THUNDERSTORM WAS LOCATED NEAR BLOOMFIELD IN
KNOX COUNTY AND WAS MOVING EAST A 25 MPH WITH MORE STORMS OVER
ANTELOPE COUNTY. THESE STORMS HAVE A HISTORY OF PRODUCING HAIL IN
EXCESS OF 2 INCHES AND GUSTY WINDS TO 45 MILES AN HOUR.  PERSONS FROM
HARTINGTON THROUGH PIERCE SHOULD TAKE PROTECTIVE ACTION IMMEDIATELY.
 
PEOPLE IN THE WARNED AREA SHOULD GET INTO A REINFORCED SHELTER AND
PREPARE FOR DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN...AND
DANGEROUS LIGHTNING.

ZAPOTOCNY

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.

In the hours before

Special weather statement, Aug 14, 5:55 PM CDT, 2 hours 16 minutes before

NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093-
IAZ043-055-056-069-079-080-090-091-151200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
555 PM CDT THU AUG 14 1997

...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA...

SPOTTER ACTION...
STORM SPOTTER ACTIVATION MAY BE NECESSARY THIS EVENING INTO TONIGHT
OVER EASTERN NEBRASKA AND SOUTHWEST IOWA.

DISCUSSION...

THUNDERSTORMS HAVE STARTED TO DEVELOP AHEAD OF A SURFACE TROF THAT
EXTENDS FROM CENTRAL SOUTH DAKOTA THROUGH CENTRAL NEBRASKA.  VERY
UNSTABLE AIR IS IN PLACE ACROSS EASTERN NEBRASKA AND AS THE STORMS
MOVE EAST INTO THE REGION THIS EVENING SEVERE STORMS MAY DEVELOP WITH
THE PRIMARY THREAT BEING LARGE HAIL AND DAMAGING WINDS.

FOBERT

Local storm report, Aug 14, 7:31 PM CDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
731 PM CDT THU AUG 14 1997

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0645 PM    VERDEL                    NE   2.5 INCH HAIL
08/14/97   KNOX                           PEA TO TENNIS BALL SIZE
                                          HAIL FELL FOR 15 MINUTES
                                          FROM 645-7PM CDT.

ZAPOTOCNY

Local storm report, Aug 14, 7:31 PM CDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED LOCATION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
731 PM CDT THU AUG 14 1997

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0645 PM    10 S VERDEL                    NE   2.5 INCH HAIL
08/14/97   KNOX                           PEA TO TENNIS BALL SIZE
                                          HAIL FELL FOR 15 MINUTES
                                          FROM 645-7PM CDT.

ZAPOTOCNY

Local storm report, Aug 14, 7:34 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
731 PM CDT THU AUG 14 1997

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0645 PM    VERDEL                    NE   2.5 INCH HAIL
08/14/97   KNOX                           PEA TO TENNIS BALL SIZE
                                          HAIL FELL FOR 15 MINUTES
                                          FROM 645-7PM CDT.

ZAPOTOCNY

Local storm report, Aug 14, 7:36 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED LOCATION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
731 PM CDT THU AUG 14 1997

TIME(CDT)  .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0645 PM    10 S VERDEL                    NE   2.5 INCH HAIL
08/14/97   KNOX                           PEA TO TENNIS BALL SIZE
                                          HAIL FELL FOR 15 MINUTES
                                          FROM 645-7PM CDT.

ZAPOTOCNY

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 14, 7:44 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Knox	61 min
Aug 14, 8:43 PM CDT	Severe Thunderstorm Warning	OAX	Antelope	32 min
Aug 14, 8:51 PM CDT	Severe Thunderstorm Warning	OAX	Madison, Wayne	59 min
Aug 14, 9:06 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Stanton	64 min
Aug 14, 9:06 PM CDT	Severe Thunderstorm Warning	OAX	Thurston	64 min
Aug 14, 9:12 PM CDT	Severe Thunderstorm Warning	OAX	Pierce	33 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997 Every severe thunderstorm warning in 1997

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.