Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 86, NWS Hastings, NE

May 23, 1998Valley County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at May 23, 1998, 8:46 PM CDT for Valley County, Nebraska. It was in force for 29 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: May 23, 1998, 8:46 PM CDT (01:46 UTC)
Expired: May 23, 1998, 9:15 PM CDT
In force: 29 min
Issued by: NWS Hastings, NE
Area: Whole counties

County Valley County, NE

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.8 hours before the alert went out and 144 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: 149 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 2274 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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, 5 hours 46 minutes earlier.

Area forecast discussion, May 23, 3:00 PM CDT, 5 hours 46 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.

Issued	Product	Office	Counties	Lasted
May 23, 8:02 PM CDT	Tornado Warning	GID	Valley	43 min
May 23, 8:37 PM CDT	Severe Thunderstorm Warning	GID	Greeley	38 min
May 23, 9:12 PM CDT	Tornado Warning	GID	Greeley	33 min
May 23, 9:32 PM CDT	Severe Thunderstorm Warning	GID	Howard	43 min
May 23, 9:43 PM CDT	Severe Thunderstorm Warning	GID	Sherman	32 min
May 23, 9:58 PM CDT	Severe Thunderstorm Warning	GID	Merrick, Nance	47 min
May 23, 10:15 PM CDT	Severe Thunderstorm Warning	GID	Howard	30 min
May 23, 10:41 PM CDT	Severe Thunderstorm Warning	GID	Hall, Hamilton, Merrick	34 min
May 23, 10:41 PM CDT	Severe Thunderstorm Warning	GID	Polk	34 min
May 23, 11:00 PM CDT	Severe Thunderstorm Warning	GID	York	45 min
May 23, 11:17 PM CDT	Severe Thunderstorm Warning	GID	Hamilton	38 min
May 23, 11:41 PM CDT	Severe Thunderstorm Warning	GID	Clay	34 min
May 23, 11:50 PM CDT	Severe Thunderstorm Warning	GID	Fillmore	55 min
May 24, 12:23 AM CDT	Severe Thunderstorm Warning	GID	Thayer	52 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1998 Every 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; the sounding from the Mesonet's radiosonde archive.