Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 113, NWS Omaha, NE

May 21, 1998Lancaster County, Saunders County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at May 21, 1998, 11:23 PM CDT for Lancaster County, Saunders County, Nebraska. It was in force for 62 min. 5 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
May 21, 1998, 11:23 PM CDT (04:23 UTC)
Expired
May 22, 1998, 12:25 AM CDT
In force
62 min
Issued by
NWS Omaha, NE
Area
Whole counties

Counties Lancaster County, NE, Saunders County, NE

What was reported inside it

TimeReportWhereRemark
May 21, 11:30 PM CDTHail 0.75Malcolm, NE
May 21, 11:40 PM CDTHail 0.75Raymond, NE
May 21, 11:40 PM CDTHail 0.75Raymond, NE
May 21, 11:55 PM CDTHail 0.88Ashland, NE
May 22, 12:15 AM CDTHail 1.75Waverly, NE

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, 4.4 hours before the alert went out and 43 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 1998-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 66 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 1998-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 300 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
66 J/kg
Mixed-layer CIN
-295 J/kg
Mixed-layer LCL
905 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
300 m²/s²
0-3 km storm-relative helicity
484 m²/s²
Significant tornado parameter
0.0
Supercell composite
7.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KOMA 220423 RRA
SVROMA
NEC109-155-220525-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1123 PM CDT THU MAY 21 1998

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN SAUNDERS COUNTY IN EAST CENTRAL NEBRASKA
  NORTHERN LANCASTER COUNTY IN SOUTHEASTERN NEBRASKA

* UNTIL 1225 AM CDT

* AT 1121 PM CDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A SEVERE THUNDERSTORM 18 MILES NORTHWEST OF LINCOLN OR 5 MILES
  SOUTHWEST OF VALPARAISO MOVING NORTHEAST AT 35 MPH.  THIS STORM
  WILL AFFECT AREAS MAINLY NORTH OF THE CITY OF LINCOLN.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  VALPARAISO                   AT 1118 PM CDT
  CERESCO                      AT 1125 PM CDT
  WESTON                       AT 1130 PM CDT
  MALMO                        AT 1135 PM CDT
  WAHOO                        AT 1140 PM CDT

A TORNADO WATCH IS ALSO IN EFFECT.  SEVERE THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

IF YOU ARE IN THE WARNED AREA...PREPARE FOR DAMAGING WINDS...LARGE
HAIL...VERY HEAVY RAIN...AND DANGEROUS LIGHTNING.  MOVE TO AN
INTERIOR ROOM ON fTHE LOWEST LEVEL OF YOUR HOME OR BUSINESS.

DAS

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

Local storm report, May 21, 8:28 PM CDT, 2 hours 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
828 PM CDT THU MAY 21 1998

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

0535 PM    1 S NORFOLK               NE   70 MPH TSTM GUST
05/21/98   MADISON                        WINDOWS BROKEN

0550 PM    NORFOLK                   NE   60 MPH TSTM GUST
05/21/98   MADISON

0558 PM    STANTON                   NE   60 MPH TSTM GUST
05/21/98   STANTON                        TREE LIMBS DOWN

0600 PM    2 W STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON

0600 PM    10 SW STANTON             NE   70 MPH TSTM GUST
05/21/98   STANTON                        NUMEROUS POWER LINES DOWN

0600 PM    2 S STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON                        TREES DOWN

0605 PM    2 SE STANTON              NE   .75 INCH HAIL
05/21/98   STANTON

0615 PM    5 E STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON                        TREE DAMAGE TO HOUSE AND
                                          CAR

0715 PM    CRAIG                     NE   WIND DAMAGE
05/21/98   BURT

0754 PM    2 S BLENCOE               IA   .75 INCH HAIL
05/21/98   MONONA

0801 PM    2 S MAGNOLIA              IA   TORNADO
05/21/98   HARRISON

0806 PM    WOODBINE                  IA   .75 INCH HAIL
05/21/98   HARRISON

0810 PM    4 NE LOGAN                IA   .75 INCH HAIL
05/21/98   HARRISON

0810 PM    WOODBINE                  IA   70 MPH TSTM GUST
05/21/98   HARRISON                       TREE LIMBS DOWN ALL OVER
                                          TOWN

ZAPOTOCNY
Local storm report, May 21, 8:28 PM CDT, 2 hours 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
828 PM CDT THU MAY 21 1998

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

0535 PM    1 S NORFOLK               NE   70 MPH TSTM GUST
05/21/98   MADISON                        WINDOWS BROKEN

0550 PM    NORFOLK                   NE   60 MPH TSTM GUST
05/21/98   MADISON

0558 PM    STANTON                   NE   60 MPH TSTM GUST
05/21/98   STANTON                        TREE LIMBS DOWN

0600 PM    2 W STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON

0600 PM    10 SW STANTON             NE   70 MPH TSTM GUST
05/21/98   STANTON                        NUMEROUS POWER LINES DOWN

0600 PM    2 S STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON                        TREES DOWN

0605 PM    2 SE STANTON              NE   .75 INCH HAIL
05/21/98   STANTON

0615 PM    5 E STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON                        TREE DAMAGE TO HOUSE AND
                                          CAR

0715 PM    CRAIG                     NE   WIND DAMAGE
05/21/98   BURT

0754 PM    2 S BLENCOE               IA   .75 INCH HAIL
05/21/98   MONONA

0801 PM    2 S MAGNOLIA              IA   TORNADO
05/21/98   HARRISON

0806 PM    WOODBINE                  IA   .75 INCH HAIL
05/21/98   HARRISON

0810 PM    4 NE LOGAN                IA   .75 INCH HAIL
05/21/98   HARRISON

0810 PM    WOODBINE                  IA   70 MPH TSTM GUST
05/21/98   HARRISON                       TREE LIMBS DOWN ALL OVER
                                          TOWN

ZAPOTOCNY
Local storm report, May 21, 10:32 PM CDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1032 PM CDT THU MAY 21 1998

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

0535 PM    1 S NORFOLK               NE   70 MPH TSTM GUST
05/21/98   MADISON                        WINDOWS BROKEN

0550 PM    NORFOLK                   NE   60 MPH TSTM GUST
05/21/98   MADISON

0558 PM    STANTON                   NE   60 MPH TSTM GUST
05/21/98   STANTON                        TREE LIMBS DOWN

0600 PM    2 W STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON

0600 PM    10 SW STANTON             NE   70 MPH TSTM GUST
05/21/98   STANTON                        NUMEROUS POWER LINES DOWN

0600 PM    2 S STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON                        TREES DOWN

0605 PM    2 SE STANTON              NE   .75 INCH HAIL
05/21/98   STANTON

0615 PM    5 E STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON                        TREE DAMAGE TO HOUSE AND
                                          CAR

0615 PM    5 S STANTON               NE   80 MPH TSTM GUST
05/21/98   STANTON                        DAMAGE TO A HOUSE AND
                                          OUTBUILDINGS

0615 PM    3 S PILGER                NE   80 MPH TSTM GUST
05/21/98   STANTON                        CAR DAMAGE AND DOWNED
                                          POWER LINES

0715 PM    CRAIG                     NE   WIND DAMAGE
05/21/98   BURT
0740 PM    3 N LITTLE SIOUX          IA   70 MPH TSTM GUST
05/21/98   HARRISON                       TREES DOWN

0746 PM    1 W LITTLE SIOUX          IA   70 MPH TSTM GUST
05/21/98   HARRISON

0746 PM    1 W LITTLE SIOUX          IA
05/21/98   HARRISON                       FUNNEL CLOUD

0754 PM    2 S BLENCOE               IA   .75 INCH HAIL
05/21/98   MONONA

0754 PM    1 S LITTLE SIOUX          IA   TORNADO
05/21/98   HARRISON

0801 PM    2 S MAGNOLIA              IA   TORNADO
05/21/98   HARRISON

0806 PM    WOODBINE                  IA   .75 INCH HAIL
05/21/98   HARRISON

0810 PM    4 NE LOGAN                IA   .75 INCH HAIL
05/21/98   HARRISON
0810 PM    WOODBINE                  IA   70 MPH TSTM GUST
05/21/98   HARRISON                       TREE LIMBS DOWN ALL OVER
                                          TOWN

0810 PM    4 NE LOGAN                IA   .75 INCH HAIL
05/21/98   HARRISON

0810 PM    WOODBINE                  IA   65 MPH TSTM GUST
05/21/98   HARRISON                       TREES DOWNED

0820 PM    2 E MAGNOLIA              IA   80 MPH TSTM GUST
05/21/98   HARRISON                       TREES UPROOTED AND
                                          POWERLINES DOWNED

0830 PM    CASTANA                   IA   TORNADO
05/21/98   MONONA

0845 PM    HARLAN                    IA   WIND DAMAGE
05/21/98   SHELBY                         ROOF OFF BUILDING

0849 PM    SHELBY                    IA
05/21/98   SHELBY                         FUNNEL CLOUD
>
ZAPOTOCNY
Local storm report, May 21, 10:32 PM CDT, 51 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
1032 PM CDT THU MAY 21 1998

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

0535 PM    1 S NORFOLK               NE   70 MPH TSTM GUST
05/21/98   MADISON                        WINDOWS BROKEN

0550 PM    NORFOLK                   NE   60 MPH TSTM GUST
05/21/98   MADISON

0558 PM    STANTON                   NE   60 MPH TSTM GUST
05/21/98   STANTON                        TREE LIMBS DOWN

0600 PM    2 W STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON

0600 PM    10 SW STANTON             NE   70 MPH TSTM GUST
05/21/98   STANTON                        NUMEROUS POWER LINES DOWN

0600 PM    2 S STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON                        TREES DOWN

0605 PM    2 SE STANTON              NE   .75 INCH HAIL
05/21/98   STANTON

0615 PM    5 E STANTON               NE   70 MPH TSTM GUST
05/21/98   STANTON                        TREE DAMAGE TO HOUSE AND
                                          CAR

0615 PM    5 S STANTON               NE   80 MPH TSTM GUST
05/21/98   STANTON                        DAMAGE TO A HOUSE AND
                                          OUTBUILDINGS

0615 PM    3 S PILGER                NE   80 MPH TSTM GUST
05/21/98   STANTON                        CAR DAMAGE AND DOWNED
                                          POWER LINES

0715 PM    CRAIG                     NE   WIND DAMAGE
05/21/98   BURT
0740 PM    3 N LITTLE SIOUX          IA   70 MPH TSTM GUST
05/21/98   HARRISON                       TREES DOWN

0746 PM    1 W LITTLE SIOUX          IA   70 MPH TSTM GUST
05/21/98   HARRISON

0746 PM    1 W LITTLE SIOUX          IA
05/21/98   HARRISON                       FUNNEL CLOUD

0754 PM    2 S BLENCOE               IA   .75 INCH HAIL
05/21/98   MONONA

0754 PM    1 S LITTLE SIOUX          IA   TORNADO
05/21/98   HARRISON

0801 PM    2 S MAGNOLIA              IA   TORNADO
05/21/98   HARRISON

0806 PM    WOODBINE                  IA   .75 INCH HAIL
05/21/98   HARRISON

0810 PM    4 NE LOGAN                IA   .75 INCH HAIL
05/21/98   HARRISON
0810 PM    WOODBINE                  IA   70 MPH TSTM GUST
05/21/98   HARRISON                       TREE LIMBS DOWN ALL OVER
                                          TOWN

0810 PM    4 NE LOGAN                IA   .75 INCH HAIL
05/21/98   HARRISON

0810 PM    WOODBINE                  IA   65 MPH TSTM GUST
05/21/98   HARRISON                       TREES DOWNED

0820 PM    2 E MAGNOLIA              IA   80 MPH TSTM GUST
05/21/98   HARRISON                       TREES UPROOTED AND
                                          POWERLINES DOWNED

0830 PM    CASTANA                   IA   TORNADO
05/21/98   MONONA

0845 PM    HARLAN                    IA   WIND DAMAGE
05/21/98   SHELBY                         ROOF OFF BUILDING

0849 PM    SHELBY                    IA
05/21/98   SHELBY                         FUNNEL CLOUD
>
ZAPOTOCNY

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 7:47 PM CDTSevere Thunderstorm WarningOAXBurt18 min
May 21, 10:47 PM CDTSevere Thunderstorm WarningOAXButler, Seward63 min
May 22, 12:02 AM CDTTornado WarningOAXLancaster33 min
May 22, 12:11 AM CDTFlash Flood WarningOAXButler, Seward6 hr
May 22, 12:16 AM CDTTornado WarningOAXLancaster19 min
May 22, 12:19 AM CDTSevere Thunderstorm WarningOAXSarpy46 min
May 22, 12:38 AM CDTSevere Thunderstorm WarningOAXCass62 min
May 22, 12:44 AM CDTSevere Thunderstorm WarningOAXSaunders16 min
May 22, 12:46 AM CDTFlash Flood WarningOAXLancaster, Saunders5 hr
May 22, 12:56 AM CDTSevere Thunderstorm WarningOAXSaline64 min
May 22, 1:04 AM CDTSevere Thunderstorm WarningOAXSarpy46 min
May 22, 1:48 AM CDTSevere Thunderstorm WarningOAXGage, Lancaster62 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1998Every severe thunderstorm warning in 1998

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.