Alert archive / Nebraska / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 110, NWS Hastings, NE

July 20, 2000Merrick County, Nance County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jul 20, 2000, 12:04 AM CDT for Merrick County, Nance County, Nebraska. It was in force for 41 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
Jul 20, 2000, 12:04 AM CDT (05:04 UTC)
Expired
Jul 20, 2000, 12:45 AM CDT
In force
41 min
Issued by
NWS Hastings, NE
Area
Whole counties

Counties Merrick County, NE, Nance County, NE

The radar

The Grand Island radar (KUEX), 113 km from the middle of the area, began a volume at 05:05 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

Omaha, NE (KOAX), launched 00:00Z, 5.1 hours before the alert went out and 137 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 2000-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2000-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
761 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
103 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.

000 
WUUS53 KGID 200505
SVRGRI
NEC121-125-200545-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
1204 AM CDT THU JUL 20 2000

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NANCE COUNTY IN CENTRAL NEBRASKA
  NORTHERN MERRICK COUNTY IN CENTRAL NEBRASKA

* UNTIL 1245 AM CDT

* AT 1159 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 15 MILES SOUTHWEST OF BELGRADE...OR ABOUT 29
  MILES NORTH OF GRAND ISLAND...MOVING EAST AT 45 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FULLERTON AT 1215 AM CDT
  
PEOPLE IN NANCE AND NORTHERN MERRICK COUNTIES SHOULD SEEK SHELTER IN
A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. DAMAGING THUNDERSTORM
WINDS IN EXCESS OF 60 MPH AND LARGE HAIL THE SIZE OF GOLFBALLS ARE
LIKELY.

$$

LAT...LON 4147 9826 4124 9828 4123 9779 4148 9763

09

NNNN

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 Jul 19, 2:40 PM CDT, 9 hours 24 minutes earlier.

Area forecast discussion, Jul 19, 2:40 PM CDT, 9 hours 24 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
240 PM CDT WED JUL 19 2000

THUNDERSTORM CHANCES ARE THE FOCUS AGAIN THIS CYCLE AS UPPER FLOW
TRANSITIONS FROM WLY TO NWLY BUT TROPICAL MOISTURE REMAINS TRAPPED
IN RIDGE. ALSO MODELS DO NOT HAVE A VERY GOOD TRACK RECORD WITH THE
WEAK WAVES ANALYZED THIS MORNING TOPPING UPPER RIDGE. AGAIN TODAY
THE 12Z IS BACKING OFF OF HIGH PLAINS CONVECTION. QUESTION IS WHETHER
THIS WILL BE A MISTAKE TODAY. CURRENT INDICIATIONS ARE MAYBE NOT.
CAPE ACRS NWRN KS/NERN COLO IN 1500-2000 J/KG RANGE...QUITE A BIT
LOWER THAN YESTERDAY VISIBLE IMAGERY SHOWING MUCH LESS IN WAY OF
CONVECTION OVER NERN COLO AT THIS TIME YESTERDAY. METARS ALSO
SHOWING LESS UPSLOPE FLOW. THIS SAID STILL THINK SOME DEVELOPMENT
POSSIBLE BUT WILL BACK OFF LIKELY POPS IN SWRN ZONES.

MODELS ARE KEYING MORE ON MOST SIGNIFICANT WAVE ANALYZED OVER MT AT
12Z. THIS WOULD FOCUS BULK OF CONVECTION ACRS NRN PLAINS THEN SLIDE
SEWD LATE NIGHT OR EARLY TOMORROW THROUGH IA/ERN NEBR. ACCOMPANYING
COLD FRONT TO ADD LOW LEVEL FOCUS. FRONT CONTINUES SOUTH INTO NCNTL
KS DURING AFTN. WITH BETTER MOISTURE...HIGHER CAPE AND STILL FAIRLY
STEEP LAPSE RATES WILL CONTINUE WITH A DECENT CHC IN SRN ZONES
THROUGH THURSDAY NIGHT.

LATER PDS A LITTLE MORE NEBULOUS AS AREAS OF BEST LIFT APPEAR TO
DIMINISH. STILL WITH MOIST NW FLOW WILL CONTINUE WITH SLGT/CHC POPS
THROUGH THE WEEKEND BEFORE RIDGE BUILDS IN A LITTLE BETTER MONDAY.

COOL REGIME TO CONTINUE WITH CLOUDS AND REINFORCING COOL SHOTS. WILL
TREND TO LOW END OR BELOW GUIDANCE.

.GID...NONE.

BARRITT

In the hours before

Local storm report, Jul 19, 11:36 PM CDT, 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1136 PM CDT WED JUL 19 2000

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

1123 PM    4 W LOUP CITY             NE    1 INCH HAIL
07/19/00   SHERMAN
Local storm report, Jul 19, 11:48 PM CDT, 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1148 PM CDT WED JUL 19 2000

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

1140 PM    3 W COTESFIELD            NE    .75 INCH HAIL
07/19/00   HOWARD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 10:50 PM CDTSevere Thunderstorm WarningGIDFurnas40 min
Jul 19, 10:53 PM CDTSevere Thunderstorm WarningGIDSherman52 min
Jul 19, 11:37 PM CDTSevere Thunderstorm WarningGIDHoward38 min
Jul 20, 12:02 AM CDTSevere Thunderstorm WarningGIDGreeley43 min
Jul 20, 12:28 AM CDTTornado WarningGIDGreeley, Howard32 min
Jul 20, 12:34 AM CDTTornado WarningGIDMerrick, Nance26 min
Jul 20, 1:01 AM CDTSevere Thunderstorm WarningGIDHoward, Merrick44 min
Jul 20, 4:03 PM CDTSevere Thunderstorm WarningGIDFurnas42 min
Jul 20, 4:43 PM CDTSevere Thunderstorm WarningGIDFurnas62 min
Jul 20, 4:49 PM CDTTornado WarningGIDFurnas41 min
Jul 20, 5:12 PM CDTSevere Thunderstorm WarningGIDGosper48 min
Jul 20, 5:48 PM CDTSevere Thunderstorm WarningGIDPhelps57 min
Jul 20, 6:00 PM CDTSevere Thunderstorm WarningGIDGosper30 min
Jul 20, 6:17 PM CDTSevere Thunderstorm WarningGIDHarlan58 min
Jul 20, 6:45 PM CDTSevere Thunderstorm WarningGIDKearney, Phelps45 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2000Every severe thunderstorm warning in 2000

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.