Alert archive / Nebraska / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 129, NWS Hastings, NE

July 21, 2000Furnas County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jul 21, 2000, 10:30 PM CDT for Furnas County, Nebraska. It was in force for 45 min. 1 report 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: Jul 21, 2000, 10:30 PM CDT (03:30 UTC)
Expired: Jul 21, 2000, 11:15 PM CDT
In force: 45 min
Issued by: NWS Hastings, NE
Area: Whole counties

County Furnas County, NE

The radar

The Grand Island radar (KUEX), 126 km from the middle of the area, began a volume at 03:31 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

Time	Report	Where	Remark
Jul 21, 10:55 PM CDT	Hail 0.75	Wilsonville, 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.5 hours before the alert went out and 121 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: 380 J/kg
Mixed-layer CIN: -200 J/kg
Mixed-layer LCL: 1489 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 103 m²/s²
0-3 km storm-relative helicity: 162 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

067 
WUUS53 KGID 220330
SVRGRI
NEC065-220415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
1030 PM CDT FRI JUL 21 2000

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FURNAS COUNTY IN SOUTH CENTRAL NEBRASKA

* UNTIL 1115 PM CDT

* AT 1026 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 12 MILES WEST OF WILSONVILLE...OR ABOUT 17
  MILES EAST OF MCCOOK...MOVING SOUTHEAST AT 55 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WILSONVILLE AT 1040 PM CDT
  HENDLEY AT 1045 PM CDT
  BEAVER CITY AT 1050 PM CDT
  HOLLINGER AT 1055 PM CDT

PEOPLE IN FURNAS COUNTY 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 QUARTERS ARE LIKELY.

TORRENTIAL RAINFALL WILL ALSO BE POSSIBLE. MONITOR STREAMS IN THE
AREA FOR SIGNIFICANT RISES AND MOVE TO HIGHER GROUND IF NECESSARY.
REMEMBER NEVER TO DRIVE THROUGH ANY FLOODED ROADWAY.

$$

LAT...LON 4023 10035 4006 10044 4003 9965 4028 9965

FAY

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 21, 3:10 PM CDT, 7 hours 20 minutes earlier.

Area forecast discussion, Jul 21, 3:10 PM CDT, 7 hours 20 minutes before

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
310 PM CDT FRI JUL 21 2000

IN THE SHORT TERM...2 AREAS OF CONCERN ATTM. FIRST IS CONVECTION
FIRING TO THE WEST OF THE CWA NEAR A CONVERGENT FRONTAL BNDRY
STRETCHING NW-SE. WEDGE OF DEW POINTS IN THAT REGION ARE AOA 60 DEGS.
WILL THEREFORE SPLIT FIRST PERIOD INTO EVENING AND OVERNITE.  THE
SECOND AREA IS A BETTER DEFINED AREA OF CONVECTION MOVG THRU THE SRN
DAKOTAS. CURRENT TREND SUGGEST THAT CELLS WILL BEGIN TO MERGE OVER
SRN SOUTH DAKOTA AND MOVE INTO NEB LATER THIS EVENING. THIS HAS
ALREADY PROMPTED SPC TO ISSUE A SVR TS WATCH TIL 9PM CDT FOR MOST
OF CENTRAL AND SOUTH-CENTRAL NEB. AS THE EVENING PROGRESSES... THE
ETA SUGGEST AN UPPER LEVEL WAVE TO MOVE THRU AN AREA OF DECENT DPVA
BY 06Z TONITE. THE ETA ALSO SUGGEST THAT EARLY ON THIS EVENING THERE
SEEMS TO BE ENOUGH ENVIRONMENTAL SHEAR TO SUPPORT SUPERCELL
DEVELOPMENT...THEN LATER ON AS SHEAR WEAKENS...TREND MORE TOWARDS A
LINE OF CONVECTION WHICH SHOULD TAKE SHAPE SOMETIME AFTER MIDNITE AND
A BIT FURTHER SOUTH. AN MCS SHOULD POP SOMEWHERE ACROSS WRN KS
WHERE FAVORABLE LOW LEVEL GEOSTROPHIC FLOW MEETS STRONG 850MB
FRONTOGENETIC FORCING. THEREFORE WILL GO WITH SLIGHTLY HIGHER POPS
OVER KS CWA OVERNITE.

IN THE LONG TERM...TIME SECTIONS OVER THE AREA INDICATE PERSISTENT
AMPLE MOISTURE ROUGHLY BETWEEN 850-700MB WHICH SUGGEST MOSTLY CLOUDY
SKIES THRU EARLY SUNDAY MORNING. THE UPPER LEVEL RIDGE AXIS DOES
SLOWLY MOVE EAST THRU 60 HRS WHICH SHOULD HELP SWEEP CLOUD COVER
OUT OF THE CWA BY SUNDAY AFTERNOON. A CHANCE FOR PCPN TAKES SHAPE
AGAIN SATURDAY NITE THRU SUNDAY MORNING. BEST CHANCES THOUGH SEEM
TO BE OVER OUR EASTERN CWA AND GENERALLY ACROSS EASTERN NEB. WILL
THEREFORE COVER WITH SMALL POPS. AS FOR TEMPS FWC AND FAN HAD SOME
SIGNIFICANT DISCREPANCIES AT TIMES...SO EITHER USED A BLEND OR GUT
FEELING.

.GID...NONE

DEE

In the hours before

Local storm report, Jul 21, 8:11 PM CDT, 2 hours 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
811 PM CDT FRI JUL 21 2000

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

0745 PM    5 W ORD                   NE    1.75 INCH HAIL
07/21/00   VALLEY

0805 PM    7 N LOUP CITY             NE    1.75 INCH HAIL
07/21/00   SHERMAN

Local storm report, Jul 21, 8:49 PM CDT, 1 hour 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
849 PM CDT FRI JUL 21 2000

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

0815 PM    2 N LOUP CITY             NE    .75 INCH HAIL
07/21/00   SHERMAN

0845 PM    RAVENNA                   NE    .75 INCH HAIL
07/21/00   BUFFALO

Special weather statement, Jul 21, 9:06 PM CDT, 1 hour 24 minutes before

NEZ039-040-046-047-060>062-072>075-082>085-220230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
906 PM CDT FRI JUL 21 2000

...SEVERE THUNDERSTORM WATCH NUMBER 605 EXPIRED...

SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS SOUTH CENTRAL NEBRASKA
FOR THE NEXT SEVERAL HOURS. WHILE AN ISOLATED STORM MAY BE SEVERE...
MORE WIDESPREAD SEVERE WEATHER IS NOT EXPECTED. THUS THE WATCH WAS
ALLOWED TO EXPIRE AT 9 PM.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 21, 7:00 PM CDT	Severe Thunderstorm Warning	GID	Valley	60 min
Jul 21, 7:37 PM CDT	Tornado Warning	GID	Valley	38 min
Jul 21, 8:02 PM CDT	Severe Thunderstorm Warning	GID	Sherman	58 min
Jul 21, 8:32 PM CDT	Severe Thunderstorm Warning	GID	Buffalo	58 min
Jul 21, 9:15 PM CDT	Severe Thunderstorm Warning	GID	Hall	45 min
Jul 21, 9:41 PM CDT	Severe Thunderstorm Warning	GID	Adams	49 min
Jul 22, 5:04 PM CDT	Severe Thunderstorm Warning	GID	Greeley	41 min
Jul 22, 5:50 PM CDT	Severe Thunderstorm Warning	GID	Dawson	55 min
Jul 22, 6:43 PM CDT	Severe Thunderstorm Warning	GID	Dawson	47 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2000 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.