Alert archive / Nebraska / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 157, NWS Hastings, NE

August 25, 2000Valley County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Aug 25, 2000, 5:49 PM CDT for Valley County, Nebraska. It was in force for 41 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
Aug 25, 2000, 5:49 PM CDT (22:49 UTC)
Expired
Aug 25, 2000, 6:30 PM CDT
In force
41 min
Issued by
NWS Hastings, NE
Area
Whole counties

County Valley County, NE

The radar

The North Platte radar (KLNX), 139 km from the middle of the area, began a volume at 22:50 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

TimeReportWhereRemark
Aug 25, 6:12 PM CDTThunderstorm Wind 52 EOrd, 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 12:00Z, 10.8 hours before the alert went out and 144 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 12:00Z on 2000-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 347 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 12:00Z on 2000-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.1939Sfc1 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
347 J/kg
Mixed-layer CIN
-438 J/kg
Mixed-layer LCL
1882 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
133 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 252250
SVRGRI
NEC175-252330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
549 PM CDT FRI AUG 25 2000

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN VALLEY COUNTY IN CENTRAL NEBRASKA

* UNTIL 630 PM CDT

* AT 543 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER FORT HARTSUFF STATE PARK...OR ABOUT 40
  MILES NORTHEAST OF BROKEN BOW...MOVING SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ELYRIA AT 555 PM CDT
  ORD AT 605 PM CDT

PEOPLE IN NORTHERN VALLEY 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.

$$

LAT...LON 4186 9902 4165 9919 4147 9876 4173 9878

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 Aug 25, 2:08 PM CDT, 3 hours 41 minutes earlier.

Area forecast discussion, Aug 25, 2:08 PM CDT, 3 hours 41 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
208 PM CDT FRI AUG 25 2000

CHC OF TSRA THE PRIMARY QN OF THE FP WITH SFC BNDRY SLOGGING THROUGH
NW NEB TDA WITH TSRA FIRING OVR SD WITH MID LVL SHRTWV...700 MB
TROF EXTENDS INTO ERN CO AS PER EARLY AFTN PROFILERS.  CIN RMNS
HIGH SO NEB ACTIVITY IS WEAK AND SPORADIC.  HOWEVER...LAPS/MSAS/
GOES SOUNDINGS MAINTAIN INSTABILITY SO WL HAVE TO KP CHC POPS ON THE
BNDRY AS SHRTWV/AFTN HEATING CONT TO ERODE THE CAP.  SFC WIND HAD
TURNED TO THE NORTHWEST OVR THE WRN 3RD OF NEB BY 18Z...SO ETA/NGM
1ST PD SOLNS FOR PROGRESSION OF BNDRY INTO NRN KS BY SAT MRNG WL
BE ACCEPTED.

SAT AND SAT NGT...DRY UNDR SHRTWV RIDGE FOR MOST OF AREA.  EXCEPTION
WL BE KS CWA WHERE STALLED BNDRY MAY AGAIN FOCUS TSRA ON SAT EVE.
WL NOT EXCEED COOLER FWC HIGHS FOR NEB CWA ON SAT WITH NE TO E SFC
WIND TO COOL THE BROW.  LOW TO MID 90S LKS OK FOR KS CWA GIVEN WARM
TEMP PROFILE...BNDRY UNCERTAINTY.  SOME FOG/ST AGAIN POSSIBLE BY
SUN MRNG OVR ERN CWA AS UPSLOPE DRAWS LLVL MSTR BACK INTO THE CWA.

SIMILIAR PTN AS TDA FOR SUN INTO MON WITH SD SFC LOW/MID LVL TROF OVR
THE HIGH PLNS.  FAVORABLE MSTR CNVRGNC AREA AND MID LVL SPPRT ARE
AVN/MESOETA PROGGED TO BE N OF AREA...SO WL KP THESE LATTER PDS DRY
AND WARM UNTIL MON NGT CDFNT.

IN THE EFP...POSITION/PROGRESS OF SFC BNDRY IS THE QN AND LOW
CONFIDENCE IN MDL SOLNS PROHIBITS REMOVAL OF MON NGT/TUES TSRA AT
THIS TIME.  WL DRY IT OUT ON WED WITH UPR/MID LVL HIGH STILL
PROGGED OVR NR THE MID MS/LWR MO VALLEY AS PER UKMO/CANADIAN.  MRF
OHIO VALLEY SOLN LKS TO BE TOO FAR E...SO TEMPS WL BE WARMER THAN FMR
NMBRS BY MIDWEEK.

.GID...NONE.

09

In the hours before

Special weather statement, Aug 25, 11:59 AM CDT, 5 hours 50 minutes before
KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-252100-

SEVERE WEATHER OUTLOOK - SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS
NATIONAL WEATHER SERVICE HASTINGS NE
1159 AM CDT FRI AUG 25 2000

...SPOTTER ACTIVATION SHOULD NOT BE NEEDED TODAY OR TONIGHT...

A COOL FRONT WILL MOVE INTO THE AREA LATE TODAY INTO TONIGHT. THIS
FRONT WILL PROVIDE THE FOCUS FOR SCATTERED THUNDERSTORMS THIS EVENING
INTO THE OVERNIGHT HOURS.

AT THIS TIME IT APPEARS THAT MOST OF THE THUNDERSTORMS WILL REMAIN
NON SEVERE. HOWEVER...IT IS NOT OUT OF THE QUESTION TO SEE ISOLATED
LARGE HAIL OR DAMAGING WINDS...ESPECIALLY DURING THE EVENING.

SCATTERED THUNDERSTORMS WILL DEVELOP IN SOUTH CENTRAL NEBRASKA BY
AROUND 6 PM AND THEN MOVE SOUTHEAST INTO NORTH CENTRAL KANSAS AFTER
MIDNIGHT.

DEG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 6:00 PM CDTTornado WarningGIDValley30 min
Aug 25, 6:28 PM CDTTornado WarningGIDValley47 min
Aug 25, 6:40 PM CDTSevere Thunderstorm WarningGIDSherman65 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.