Alert archive / Nebraska / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 118, NWS Hastings, NE

July 20, 2000Harlan County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Jul 20, 2000, 6:17 PM CDT for Harlan County, Nebraska. It was in force for 58 min. 2 reports 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 20, 2000, 6:17 PM CDT (23:17 UTC)
Expired: Jul 20, 2000, 7:15 PM CDT
In force: 58 min
Issued by: NWS Hastings, NE
Area: Whole counties

County Harlan County, NE

The radar

The Grand Island radar (KUEX), 83 km from the middle of the area, began a volume at 23:07 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 20, 6:37 PM CDT	Hail 1.75	Orleans, NE
Jul 20, 6:40 PM CDT	Hail 0.75	Alma, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 20, 5:45 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.3 hours before the alert went out and 146 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: 480 J/kg
Mixed-layer CIN: -280 J/kg
Mixed-layer LCL: 1070 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 152 m²/s²
0-3 km storm-relative helicity: 113 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KGID 202318
SVRGRI
NEC083-210015-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
617 PM CDT THU JUL 20 2000

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

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

* UNTIL 715 PM CDT

* AT 612 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM JUST EAST OF OXFORD...OR ABOUT 20 MILES 
  SOUTHWEST OF HOLDREGE...MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ORLEANS AT 630 PM CDT
  HUNTLEY AT 640 PM CDT
  REPUBLICAN CITY AT 650 PM CDT
  HARLAN COUNTY DAM AT 655 PM CDT

PEOPLE IN HARLAN 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 GOLFBALLS ARE LIKELY.

THIS IS A DANGEROUS STORM. REMEMBER...SEVERE THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCED WARNING.

A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN AND
OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO WARNING.

$$

DDN

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 20, 2:27 PM CDT, 3 hours 50 minutes earlier.

Area forecast discussion, Jul 20, 2:27 PM CDT, 3 hours 50 minutes before

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
227 PM CDT THU JUL 20 2000

TSTM CHCS/TIMING REMAIN THE PROBLEM

A COUPLE OF SFC BOUNDARIES TO NOTE ACROSS THE AREA THIS AFTN...ONE
OF WHICH EXTENDS FROM BETWEEN KCDR/KAIA TO KODX TO KTQE.  THE SECOND
BOUNDARY STRETCHES ALONG I-70 IN NORTHERN KANSAS.  OVERALL FLOW
WEST/NORTHWEST WITH SEVERAL EMBEDDED SHORTWAVE TROFS.  THE NEXT WAVE
OF CONSEQUENCE CURRENTLY LOCATED IN SOUTHWEST SOUTH DAKOTA AND THIS
WAVE WILL MOVE SOUTHEAST THRU CWA THIS EVENING.  SCATTERED SHOWERS
AND THUNDERSTORMS HAVE ALREADY DEVELOPED NR AFOREMENTIONED
BOUNDARIES AND COVERAGE SHLD INCREASE THIS REMAINDER OF AFTN/EVE AS
WAVE ADVANCES.  LAPS DATA INDICATES CAPES OF 1500 J/KG AND WEAK CAP
IN WESTERN/SOUTHERN CWA WHICH IS INCLUDED IN SPC DY1 SLGHT
RISK...AND SPC DISCUSSION DETAILS SVR POTENTIAL.  ZONE WORDING FOR
TONIGHT WILL BE WORDED AS SCT TSTMS.  ADDITIONAL TSTMS TONIGHT IN
EASTERN CO WILL ALSO BE OF CONCERN FOR SOUTHERN COUNTIES AS
CONVECTION ORGANIZES INTO MCS AND MOVES E/SE INTO CWA LATE.

BEYOND TONIGHT...MODELS HAVE HAD DIFFICULTY TIMING AND DETERMING
EFFECT OF WAVES IN THIS W/NW FLOW REGIME...HOWEVER UNTIL WESTERN US
RIDGE BUILDS FURTHER EAST OVER THE WEEKEND...SOME CHC FOR TSTMS
REMAINS.  FOLLOWED CLOSER TO ETA/MESOETA SOLUTIONS FOR FORECAST.
BOUNDARIES ARE PUSHED SOUTH INTO SOUTHERN KS/OKLAHOMA FROM
CONVECTION TONIGHT.  HIGH PRESSURE BUILDS SOUTH AND EAST FROM
DAKOTAS WITH WEAK RETURN FLOW SETTING UP.  THIS WILL PROVIDE AN
INCREASE IN MOISTURE TO ALREADY JUICY ATMOSPHERE.  MODEL TIMING OF
NEXT WAVE DIVING S THROUGH WESTERN NEBRASKA OCCURS FRIDAY NIGHT TIME
FRAME...HOWEVER CANNOT RULE AT THE POSSIBILITY OF SCT STORMS DURING
THE DAY.  MODELS/SPC DY2 OUTLOOK KEY IN ON MCS DEVELOPING IN
SOUTHWEST NEBRASKA FRIDAY NIGHT AND TRACKING S/SE.  WILL PLACE
HIGHEST POPS IN SOUTHWEST/WESTERN COUNTIES.

SATURDAY SHLD SEE A FAIR AMNT OF SUNSHINE AND WILL DOWNPLAY TSTM
CHCS WITH THE IDEA THAT TIMING SHLD BE LATE.  AS FAR AS TEMPS...WILL
NOT DEVIATE MUCH FROM GUIDANCE.

IN THE EXTENDED...WILL KEEP TSTM CHCS IN FCST SAT NIGHT/SUNDAY
BEFORE RIDGE BUILDS EAST.  DRY MONDAY...BUT TSTM CHCS MAY RETURN AS
EARLY AS MONDAY NIGHT AS PACIFIC NORTHWEST SYSTEM APPROACHES AND
FLATTENS RIDGE.  FOR NOW WILL RETURN TSTM CHCS TO FCST TUESDAY.

.GID...NONE.

FAY

In the hours before

Local storm report, Jul 20, 4:31 PM CDT, 1 hour 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
431 PM CDT THU JUL 20 2000

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

0425 PM    4 S WILSONVILLE           NE    1 INCH HAIL
07/20/00   FURNAS

Local storm report, Jul 20, 5:52 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
552 PM CDT THU JUL 20 2000

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

0540 PM    PRAIRIE VIEW              KS    1.75 INCH HAIL
07/20/00   PHILLIPS

Local storm report, Jul 20, 5:54 PM CDT, 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
554 PM CDT THU JUL 20 2000

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

0553 PM    2 N PRAIRIE VIEW          KS    .75 INCH HAIL
07/20/00   PHILLIPS

Local storm report, Jul 20, 6:12 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
612 PM CDT THU JUL 20 2000

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

0610 PM    3 S LOOMIS                NE    1 INCH HAIL
07/20/00   PHELPS

0610 PM    5 S LOOMIS                NE    2.5 INCH HAIL
07/20/00   PHELPS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 19, 10:50 PM CDT	Severe Thunderstorm Warning	GID	Furnas	40 min
Jul 19, 10:53 PM CDT	Severe Thunderstorm Warning	GID	Sherman	52 min
Jul 19, 11:37 PM CDT	Severe Thunderstorm Warning	GID	Howard	38 min
Jul 20, 12:02 AM CDT	Severe Thunderstorm Warning	GID	Greeley	43 min
Jul 20, 12:04 AM CDT	Severe Thunderstorm Warning	GID	Merrick, Nance	41 min
Jul 20, 12:28 AM CDT	Tornado Warning	GID	Greeley, Howard	32 min
Jul 20, 12:34 AM CDT	Tornado Warning	GID	Merrick, Nance	26 min
Jul 20, 1:01 AM CDT	Severe Thunderstorm Warning	GID	Howard, Merrick	44 min
Jul 20, 4:03 PM CDT	Severe Thunderstorm Warning	GID	Furnas	42 min
Jul 20, 4:43 PM CDT	Severe Thunderstorm Warning	GID	Furnas	62 min
Jul 20, 4:49 PM CDT	Tornado Warning	GID	Furnas	41 min
Jul 20, 5:12 PM CDT	Severe Thunderstorm Warning	GID	Gosper	48 min
Jul 20, 5:48 PM CDT	Severe Thunderstorm Warning	GID	Phelps	57 min
Jul 20, 6:00 PM CDT	Severe Thunderstorm Warning	GID	Gosper	30 min
Jul 20, 6:45 PM CDT	Severe Thunderstorm Warning	GID	Kearney, Phelps	45 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.