Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 13, NWS Hastings, NE

April 14, 1998Hamilton County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Apr 14, 1998, 6:58 PM CDT for Hamilton County, Nebraska. It was in force for 32 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: Apr 14, 1998, 6:58 PM CDT (23:58 UTC)
Expired: Apr 14, 1998, 7:30 PM CDT
In force: 32 min
Issued by: NWS Hastings, NE
Area: Whole counties

County Hamilton 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
Apr 14, 3:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 12.0 hours before the alert went out and 147 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1729 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: -55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

421 
WUUS1 KGRI 142359
SVRGRI
NEC081-150030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
658 PM CDT TUE APR 14 1998

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTH CENTRAL NEBRASKA

   ...HAMILTON

AT 655 PM CDT... DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
15 MILES SOUTHEAST OF GRAND ISLAND...NEAR AURORA MOVING NORTHEAST
AT 25 MPH.

THE STORM WILL TRACK TOWARD AURORA AND HAMPTON THROUGH 730PM.

SEVERE THUNDERSTORMS CAN PRODUCE A TORNADO WITH LITTLE ADVANCED
WARNING AND YOU SHOULD MOVE TO A PLACE OF SAFETY WITH THE APPROACH
OF THIS STORM.

GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS A TORNADO
WATCH IS IN EFFECT. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO
PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND
DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.  STAY
INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

JAB/LEW

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 Apr 14, 2:09 PM CDT, 4 hours 49 minutes earlier.

Area forecast discussion, Apr 14, 2:09 PM CDT, 4 hours 49 minutes before

CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
209 PM CDT TUE APR 14 1998

FIRST PROBLEM IS INITIAL PERIOD SEVERE WEATHER POTENTIAL.

18Z SURFACE MAP DEPICTS BOUNDARY INTO SOUTHEAST CWFA.  SOUTHEAST OF
BOUNDARY TEMPERATURES INTO THE LOWER 70S WITH STRENGTHENING SOUTHEAST
WIND FIELD.  PROFILER DATA (SLIGHTLY OLD) WITH STRONG VEERING AT FBY AT
15Z THIS MORNING.  SUFACE LOW IS DEEPENING JUST SW OF KHLC WITH
STATIONARY DRY LINE TO MEDICINE LODGE.  SURFACE DEWPOINTS INCREASE TO
50+ IN A RIBBON FROM WICHITA TO NORTHEAST OF KHLC.  INHIBITION
PARAMETERS LOOK TO BE WEAKENING SLIGHTLY NEAR MAX SFC CONVERGENCE AS CU
FIELDS DEVELOPS NEAR PHILLIPSBURG.

LATEST RUC COINCIDES THESE FEATURES WELL WITH INCREASING UPPER
DIVERGENCE AND LOW LEVEL CONVERGENCE FIELDS MOVING ACROSS CWFA AND INTO
SOUTHEAST NEBRASKA BY EARLY EVENING.  RIBBON OF 10C H85 DEWPOINTS MOVE
NEAR THE SOUTHEAST CORNER OF OUR CWFA BY 00Z.  ALTHOUGH LIMITED
MOISTURE AND INSTABILITY INITIALLY...DYNAMIC PARAMETERS LOOK FAVORABLE
FOR LATE AFTERNOON AND EARLY EVENING EPISODE OF SEVERE FOR SOUTHEAST
CWFA.  WILL DELAY OPUGRI PRODUCT AS LONG AS POSSIBLE OR UNTIL ANY
OFFICAL NOTICE GIVEN.  FINALLY...LOW FFG VALUES IN A FEW COUNTIES OF
SOUTEAST CWFA...ALONG WITH 1.5 INCHES OF RAIN TWO NIGHTS AGO MAY CAUSE
A PROBLEM THERE.

QUICKLY...VERY DISTINCT CHANGES IN WEATHER BY LATE TONIGHT AS UPPER LOW
AND SURFACE MOVE EAST WRAPPING STRONG NNE WINDS ACROSS CWFA. H7 LOW
MOVING EAST AT 36HRS WILL REQUIRE HIHG POPS THROUGH WEDNESDAY NIGHT.
COLD ENOUGH AIR OVERNIGHT WEDNESDAY TO MIX/CHANGE TO SNOW IN NORTHWEST
CWFA.  AMOUNTS LIMITED THOUGH.  HAVE LITTLE PROBLEM WITH COLD GUIDANCE
TEMPERATURES AND MAY UNDER SOME IN SPOTS.

GRI NN 040/048/033/046 ++62
LXN NN 038/046/030/046 ++6-
ODX NN 038/044/030/046 +++3
HBR NN 045/052/035/048 +++3
BLT NN 048/058/038/048 +762

MORITZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 14, 3:29 PM CDT	Severe Thunderstorm Warning	GID	Dawson	46 min
Apr 14, 4:20 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Dawson	40 min
Apr 14, 4:47 PM CDT	Severe Thunderstorm Warning	GID	Buffalo	43 min
Apr 14, 5:23 PM CDT	Severe Thunderstorm Warning	GID	Furnas	37 min
Apr 14, 5:38 PM CDT	Severe Thunderstorm Warning	GID	Hamilton, Merrick	37 min
Apr 14, 6:22 PM CDT	Tornado Warning	GID	Hall	23 min
Apr 14, 6:46 PM CDT	Tornado Warning	GID	Hall	29 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.