Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 13, NWS Hastings, NE

May 7, 1997Hall County, Howard County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at May 7, 1997, 12:16 AM CDT for Hall County, Howard County, Nebraska. It was in force for 44 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 7, 1997, 12:16 AM CDT (05:16 UTC)
Expired
May 7, 1997, 1:00 AM CDT
In force
44 min
Issued by
NWS Hastings, NE
Area
Whole counties

Counties Hall County, NE, Howard County, NE

The radar

The Grand Island radar (KUEX), 81 km from the middle of the area, began a volume at 05:16 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.

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 5.3 hours before the alert went out and 175 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, N. Platte/Lee Bi, NE at 00:00Z on 1997-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 447 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, N. Platte/Lee Bi, NE at 00:00Z on 1997-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 square meters per square second.19395878Sfc1 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
447 J/kg
Mixed-layer CIN
-94 J/kg
Mixed-layer LCL
2513 m above ground
0-6 km bulk shear
59 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
214 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.4

Open this sounding in Storm Lab

The text

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

515 
WUUS1 KGRI 070520
SVRGRI
NEC093-079-070600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED SECTION OF HALL COUNTY
NATIONAL WEATHER SERVICE HASTINGS NE
1216 AM CDT WED MAY 7 1997

THE NATIONAL WEATHER SERVICE IN HASTINGS NE  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  100 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN CENTRAL NEBRASKA

   ...SOUTHERN HOWARD COUNTY

IN SOUTH CENTRAL NEBRASKA

   ...NORTHERN HALL COUNTY

PEOPLE IN SOUTHERN HOWARD COUNTY FROM BOELUS TO ST. LIBORY AND
IN NORTHERN HALL COUNTY AROUND GRAND ISLAND SHOULD REMAIN IN
SHELTER FROM HAIL UP TO AN INCH IN DIAMETER.

AT 1215 AM...RADAR SHOWED A THUNDERSTORM CAPABLE OF PRODUCING HAILSTONES
UP TO AN INCH IN DIAMETER WAS CENTERED 20 MILES NORTHWEST OF GRAND
ISLAND...JUST EAST OF BOELUS.  THE STORM WAS MOVING EAST AT JUST
15 MPH.  THE HAIL MAY REACH THE ST. LIBORY COMMUNITY BETWEEN 1230 AND
1 AM...IT MAY ALSO CATCH THE NORTHERN EDGE OF GRAND ISLAND AT THAT
TIME.

AT 1200 AM THE STORM DROPPED 3/4 INCH HAIL 5 MILES WEST OF
DANNEBROG IN SOUTHERN HALL COUNTY.  THE HAIL COVERED THE GROUND
IN THAT LOCATION.

SCHURR


&

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 6, 3:02 PM CDT, 9 hours 14 minutes earlier.

Area forecast discussion, May 6, 3:02 PM CDT, 9 hours 14 minutes before
CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
300 PM CDT TUE MAY 6 1997

FORECAST PROBLEMS TODAY INCLUDE THUNDERSTORM (MCS) DEVELOPMENT TONIGHT
AND MOVEMENT OF SYSTEM ACROSS THE CWA TOMORROW.

LATEST SFC ANAL SHOWED HIGH PRESSURE TO THE EAST AND LOW IN SE WY
RESULTING IN A MODERATE S/SE FLOW ACROSST THE CWA. 50+ DEW POINTS IN
SRN KS AND SHOULD CONTINUE TO ADVECT NORTH AS LOW LEVEL JET SETS UP
TONIGHT. PLACED WARM FRONT FROM BBF-CNK ALONG THE 45 DEW POINTS. ALOFT
7H LOW IN NE COLO AT 12Z WHICH WAS RESPONSIBLE FOR THE RA- ACROSS THE
AREA EARLIER THIS AM...AND PROFILER DERIVED VORTICITY STILL SHOWING 7H
PVA IN CWA.

SOME DIFFERNCES IN THE MODELS WITH ETA/NGM BEING FAVORED BY NCEP. THETAE
RIDGE DEVELOPS ACROSS THE AREA TONIGHT A WITH LOW LEVEL JET IDEA OF MCS
DEVELOPING IS NOT UNREASONABLE BUT FLY IN OINTMENT COULD BE CONVECTION
IN TX/NM WHICH COULD CUT OFF LOW LEVEL MOISTURE.  LOW MOVES EAST ON WED
BUT APPEARS BOUNDARY MAY HANGUP IN NRN KS AND AREA MAY STAY IN CLOUDS
PRECIP LONGER THAN PREVIOULSLY THOUGHT. ANOTHER SYSTEM MOVES ACROSS THE
NORTH ON THURSDAY WITH ASSOCIATED DYNAMICS DRAGGING ACROSS THE CWA.

IF STORMS DEVELOP FEEL IT WILL PROBABLY BE AFTER MIDNIGHT AND THEN
CHANCE OF SHOWERS INTO THE AFTERNOON IN NEB CWA/EVENING IN KS. THEN
IT LOOKS LIKE THERE COULD BE PRECIPITATION DEVELOPING AGAIN ON THRUSDAY.
WITH CLOUDS AND CHANCE OF PRECIP THE NEXT TWO DAYS WILL TEND TO GO ON
TE COOLER SIDE.

GRI WW 053/071/043/065 5303
HBR WW 053/072/042/065 7303
ODX WW 050/070/040/062 4303
LXN WW 052/074/043/065 4303
BLT WW 056/074/046/068 6303

GRIFFITH

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 9:50 PM CDTSevere Thunderstorm WarningGIDValley40 min
May 6, 10:29 PM CDTTornado WarningGIDSherman31 min
May 6, 10:38 PM CDTSevere Thunderstorm WarningGIDValley22 min
May 6, 11:05 PM CDTSevere Thunderstorm WarningGIDSherman40 min
May 6, 11:20 PM CDTSevere Thunderstorm WarningGIDHall, Howard55 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.