Alert archive / Nebraska / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 277, NWS Omaha, NE

August 18, 2003Burt County, Nebraska; Monona County, Iowa

NWS Omaha, NE issued this severe thunderstorm warning at Aug 18, 2003, 6:15 PM CDT for Burt County, Nebraska; Monona County, Iowa. It was in force for 45 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: Aug 18, 2003, 6:15 PM CDT (23:15 UTC)
Expired: Aug 18, 2003, 7:00 PM CDT
In force: 45 min
Issued by: NWS Omaha, NE
Area: Counties, with a storm outline in the text

Counties Monona County, IA, Burt County, NE

The watch it was issued in

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

Issued	Product	Office	Lasted
Aug 18, 2:05 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.3 hours before the alert went out and 73 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: 871 J/kg
Mixed-layer CIN: -256 J/kg
Mixed-layer LCL: 2262 m above ground
0-6 km bulk shear: 15 kt
0-1 km storm-relative helicity: -52 m²/s²
0-3 km storm-relative helicity: -43 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 Aug 18, 2:10 PM CDT, 4 hours 5 minutes earlier.

Area forecast discussion, Aug 18, 2:10 PM CDT, 4 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
210 PM CDT MON AUG 18 2003

TEMPERATURES AND PRECIP CHANCES THROUGH MIDWEEK MAIN CONCERN.

SYNOPSIS...SURFACE TROF LOCATED ACROSS CENTRAL NEBRASKA AT 18Z WITH
SCATTERED THUNDERSTORMS DEVELOPING FROM NORTH CENTRAL KANSAS INTO
NORTHEAST NEBARSKA. EXTENSIVE CLOUDS ACOSS MOST OF THE AREA FROM
CONVECTION THIS MORNING THAT MOVED JUST WEST OF THE CWA. SOUTHEAST
PARTS OF THE CWA REMAIN VERY HOT WITH TEMPERATURES AROUND 100 FROM
OMAHA AND LINCOLN SOUTH. UPPER WAVE CONTINUES TO LINGER OVER THE
CENTRAL ROCKIES WITH MAIN FLOW STILL ACROSS CANADA.

WITH CONVECTION ALREADY DEVELOPING WILL INCREASE POPS ACROSS MOST
OF THE AREA FOR THIS EVENING AT LEAST WITH A CONTINUED CHANCE
THROUGH WEDNESDAY AS MODELS TRACK UPPER WAVE SLOWLY ACROSS CENTRAL
PLAINS DURING THIS TIME. TEMPERATURES WILL CONTINUE TO BE A
CHALLENGE AS SURFACE TROF LINGERS ACROSS CENTRAL NEBRASKA WITH
TEMPERATURES DEPENDANT ON AMOUNT OF CLOUD AND PRECIP COVERAGE. WILL
CONTINUE WITH CURRENT TEMPERATURE TRENDS IN FORCAST FOR TUESDAY AND
BEYOND AT THIS TIME. NOT MUCH CHANGE OTHERWISE TO REMAINDER OF THE
FORECAST.

.OMA...NONE.

FOBERT

Hazardous weather outlook, Aug 18, 5:00 PM CDT, 1 hour 15 minutes before

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-191000-

HAZARDOUS WEATHER OUTLOOK...CORRECTION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
500 PM CDT MON AUG 18 2003

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

.DAY ONE...TONIGHT AND TUESDAY

SEVERE THUNDERSTORMS ARE POSSIBLE ACROSS MOST OF THE OUTLOOK AREA
THROUGH THE EARLY EVENING HOURS AS A SLOW MOVING SURFACE AND
UPPER LEVEL LOW PRESSURE SYSTEM CROSSES THE AREA.  THE MAIN
SEVERE WEATHER HAZARDS APPEAR TO BE LARGE HAIL AND DAMAGING
WINDS.

ALSO...HEAT INDICES ARE AGAIN FORECAST TO REACH 100 TO 105
DEGREES TUESDAY AFTERNOON MAINLY NEAR AND SOUTH OF THE PLATTE
RIVER IN NEBRASKA AND FROM COUNCIL BLUFFS SOUTHWARD IN SOUTHWEST
IOWA.

.DAYS TWO THROUGH SEVEN...TUESDAY NIGHT THROUGH MONDAY

THE CHANCE FOR THUNDERSTORMS WILL CONTINUE WEDNESDAY
AS THE STORM SYSTEM MOVES ACROSS THE PLAINS.  SOME THUNDERSTORMS
MAY BECOME SEVERE WITH DAMAGING WINDS THE MAIN HAZARD.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION WILL BE NEEDED TONIGHT.

DEE

In the hours before

Local storm report, Aug 18, 4:23 PM CDT, 1 hour 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
423 PM CDT MON AUG 18 2003

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

0415 PM    1 NE WILBER               NE   70 MPH TSTM GUST
08/18/03   SALINE                         REPORTED BY EMERGENCY
                                          MANAGEMENT.

Local storm report, Aug 18, 4:27 PM CDT, 1 hour 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
427 PM CDT MON AUG 18 2003

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

0420 PM    WILBER                    NE   65 MPH TSTM GUST
08/18/03   SALINE                         REPORTED BY EMERGENCY
                                          MANAGEMENT.

Local storm report, Aug 18, 5:35 PM CDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
535 PM CDT MON AUG 18 2003

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

0527 PM    2 N BELLWOOD              NE   60 MPH TSTM GUST
08/18/03   BUTLER                         REPORTED BY EMERGENCY
                                          MANAGEMENT.

Local storm report, Aug 18, 5:40 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
540 PM CDT MON AUG 18 2003

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

0513 PM    1 NE WAVERLY              NE   60 MPH TSTM GUST
08/18/03   LANCASTER                      REPORTED BY STORM
                                          SPOTTER.

Local storm report, Aug 18, 5:56 PM CDT, 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
556 PM CDT MON AUG 18 2003

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

0545 PM    SCRIBNER                  NE   WIND DAMAGE
08/18/03   DODGE                          REPORTED BY EMERGENCY
                                          MANAGEMENT.

Local storm report, Aug 18, 6:05 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED...
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
605 PM CDT MON AUG 18 2003

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

0545 PM    SCRIBNER                  NE   WIND DAMAGE
08/18/03   DODGE                          REPORTED BY
                                          EMERGENCY MANAGEMENT.
                                          POWER POLES AND TREES
                                          DOWN.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 4:19 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Lancaster, Saline	41 min
Aug 18, 4:32 PM CDT	Severe Thunderstorm Warning	OAX	Seward	43 min
Aug 18, 5:14 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Stanton	46 min
Aug 18, 5:22 PM CDT	Severe Thunderstorm Warning	OAX	Johnson, Otoe	53 min
Aug 18, 5:29 PM CDT	Severe Thunderstorm Warning	OAX	Colfax, Platte	46 min
Aug 18, 5:47 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Dodge	28 min
Aug 18, 5:56 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Thurston	49 min
Aug 18, 6:42 PM CDT	Severe Thunderstorm Warning	OAX	Thurston	18 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2003 Severe Thunderstorm Warnings in Iowa, 2003 Every severe thunderstorm warning in 2003

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.