Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 91, NWS Hastings, NE

May 23, 1998Hall County, Hamilton County, Merrick County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at May 23, 1998, 10:41 PM CDT for Hall County, Hamilton County, Merrick County, Nebraska. It was in force for 34 min. 2 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 23, 1998, 10:41 PM CDT (03:41 UTC)
Expired
May 23, 1998, 11:15 PM CDT
In force
34 min
Issued by
NWS Hastings, NE
Area
Whole counties

Counties Hall County, NE, Hamilton County, NE, Merrick County, NE

The radar

The Grand Island radar (KUEX), 76 km from the middle of the area, began a volume at 03:44 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

TimeReportWhereRemark
May 23, 10:45 PM CDTHail 0.75Grand Is, NE
May 23, 11:00 PM CDTHail 0.75Chapman, 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, 3.7 hours before the alert went out and 157 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 1998-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 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 1998-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
542 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
87 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at May 23, 3:00 PM CDT, 7 hours 41 minutes earlier.

Area forecast discussion, May 23, 3:00 PM CDT, 7 hours 41 minutes before
CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
300 PM CDT SAT MAY 23 1998

TRICKY FORECAST THIS CYCLE AS DEPENDENT UPON TIMING OF WEAK SHORTWAVES.
12Z MODEL RUNS INCONSISTENT WITH WEAK SHORTWAVES...BROAD SYNOPTIC
PATTERN SHOWS SOME AGREEMENT HOWEVER. UPPER LOW OVER NRN ROCKIES SHEARS
OUT WITH SOME REDEVELOPMENT OVER SDAK. MOST OF THIS ENERGY APPEARS TO
WANT TO STAY NORTH OF THE CWA. WEAK WAVES APPEAR IN INCREASING ZONAL
FLOW ACROSS KANSAS. RIDGING OVER ROCKIES BRINGS AREA UNDER NW FLOW
MONDAY WITH SHEARED OUT ENERGY OVER NRN PLAINS WANTING TO DROP SWD.
MOST SIGNIFICANT WAVES TO AFFECT THIS AREA HOWEVER APPEAR TO BE THIS
EVENING AND TOMORROW NIGHT.

CONVECTION FIRING WITH WAVE OVER ERN COLO APPEARS TO LACK ORGANIZATION.
EXPECT TO MOVE EWD INTO AREA BUT REMAIN RATHER SCATTERED. ETA/RUC
SUGGEST FORCING TO MOVE EAST OF AREA AFTER MIDNIGHT.

GUIDANCE TEMPS LOOK REASONABLE BUT MAY ALSO BE TRICKY DUE TO VARIABLE
CONDITIONS IN CLOUDS. WILL LEAN A BIT ON THE OPTIMISTIC SIDE WITH CLOUD
COVER PREFERRING PC/PS WORDING ATTM.

GRI BB 054/076/054/076 2132
HEB BB 055/078/056/077 2132
ODX BB 052/075/053/075 3232
LXN BB 050/075/051/076 2131
BEL BB 057/079/058/078 2132

BARRITT

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 8:02 PM CDTTornado WarningGIDValley43 min
May 23, 8:37 PM CDTSevere Thunderstorm WarningGIDGreeley38 min
May 23, 8:46 PM CDTSevere Thunderstorm WarningGIDValley29 min
May 23, 9:12 PM CDTTornado WarningGIDGreeley33 min
May 23, 9:32 PM CDTSevere Thunderstorm WarningGIDHoward43 min
May 23, 9:43 PM CDTSevere Thunderstorm WarningGIDSherman32 min
May 23, 9:58 PM CDTSevere Thunderstorm WarningGIDMerrick, Nance47 min
May 23, 10:15 PM CDTSevere Thunderstorm WarningGIDHoward30 min
May 23, 10:41 PM CDTSevere Thunderstorm WarningGIDPolk34 min
May 23, 11:00 PM CDTSevere Thunderstorm WarningGIDYork45 min
May 23, 11:17 PM CDTSevere Thunderstorm WarningGIDHamilton38 min
May 23, 11:41 PM CDTSevere Thunderstorm WarningGIDClay34 min
May 23, 11:50 PM CDTSevere Thunderstorm WarningGIDFillmore55 min
May 24, 12:23 AM CDTSevere Thunderstorm WarningGIDThayer52 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; radar from the NEXRAD Level II archive.