Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 20, NWS Hastings, NE

April 7, 2001Greeley County, Valley County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Apr 7, 2001, 12:07 AM CDT for Greeley County, Valley County, Nebraska. It was in force for 23 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
Apr 7, 2001, 12:07 AM CDT (05:07 UTC)
Expired
Apr 7, 2001, 12:30 AM CDT
In force
23 min
Issued by
NWS Hastings, NE
Area
Whole counties

Counties Greeley County, NE, Valley County, NE

The radar

The Grand Island radar (KUEX), 141 km from the middle of the area, began a volume at 05:02 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
Apr 7, 12:10 AM CDTThunderstorm Wind 52 EScotia, NE
Apr 7, 12:15 AM 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 00:00Z, 5.1 hours before the alert went out and 162 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 2001-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 363 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 2001-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 507 square meters per square second.1939587897117136Sfc1 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
363 J/kg
Mixed-layer CIN
-197 J/kg
Mixed-layer LCL
516 m above ground
0-6 km bulk shear
79 kt
0-1 km storm-relative helicity
507 m²/s²
0-3 km storm-relative helicity
554 m²/s²
Significant tornado parameter
0.0
Supercell composite
10.4

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KGID 070507
SVRGRI
NEC077-175-070530-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
1207 AM CDT SAT APR 7 2001

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN GREELEY COUNTY IN CENTRAL NEBRASKA
  EASTERN VALLEY COUNTY IN CENTRAL NEBRASKA

* UNTIL 1230 AM CDT

* AT 1202 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES NORTHEAST OF NORTH LOUP...OR ABOUT 47
  MILES NORTHWEST OF GRAND ISLAND...MOVING NORTH AT 60 MPH.

SOME LOCATIONS IN THE PATH OF THIS STORM INCLUDE FORT HARTSUFF STATE
PARK.

PEOPLE IN WESTERN GREELEY AND EASTERN VALLEY 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.

$$

EWALD/GUYER

LAT...LON 4142 9899 4140 9850 4182 9838 4193 9909

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 Apr 6, 10:30 PM CDT, 1 hour 37 minutes earlier.

Area forecast discussion, Apr 6, 10:30 PM CDT, 1 hour 37 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
1030 PM CDT FRI APR 6 2001

...UPDATE...

THUNDERSTORMS PRODUCING MARGINALLY SEVERE DOWNDRAFTS AS MID LEVEL
FLOW MORE PARALLEL TO MOVEMENT.  AS SUBSIDENCE MOVES IN AND SURFACE
WINDS COUPLE WITH MID LEVEL SOUTHWEST FLOW...SUSTAINED WINDS SHOULD
INCREASE AT THE SURFACE AND HIGHER GUSTS POSSIBLE BEFORE DAYBREAK.

.GID...WIND ADVISORYu THROUGH SATURDAY MORNING ENTIRE CWFA.

DROZD

In the hours before

Special weather statement, Apr 6, 7:28 PM CDT, 4 hours 39 minutes before
KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-070100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
728 PM CDT FRI APR 6 2001

...TORNADO WATCH IS IN EFFECT UNTIL 1 AM...

THE STORM PREDICTION CENTER HAS ISSUED A NEW TORNADO WATCH WHICH
COVERS ALL COUNTIES IN SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL
KANSAS.  THIS TORNADO WATCH...NUMBER 100...REPLACES WATCH NUMBER 96
WHICH WAS ISSUED THIS AFTERNOON AND WAS SET TO EXPIRE AT 9 PM CDT.

SEVERE THUNDERSTORMS WITH DAMAGING WIND GUSTS TO 80 MPH...LARGE
HAIL AND ISOLATED TORNADOES ARE POSSIBLE IN THE WATCH AREA WHICH IS
IN EFFECT UNTIL 1 AM.

DROZD
Special weather statement, Apr 6, 10:26 PM CDT, 1 hour 41 minutes before
KSZ005-017-070400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
1026 PM CDT FRI APR 6 2001

...TORNADO WATCH CANCELLED FOR PHILLIPS AND ROOKS COUNTIES...

TORNADO WATCH NUMBER 100 HAS BEEN CANCELLED FOR PHILLIPS AND ROOKS
COUNTIES.  SHOWERS AND A FEW THUNDERSTORMS WILL STILL BE POSSIBLE
OVERNIGHT...BUT THE THREAT OF SEVERE WEATHER HAS SHIFTED EAST.

A WIND ADVISORY IS IN EFFECT THROUGH SATURDAY MORNING FOR SUSTAINED%
SOUTHWEST WINDS OF 30 TO 40 MPH AND GUSTS TO 55 MPH.

DROZD
Local storm report, Apr 6, 10:42 PM CDT, 1 hour 25 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1042 PM CDT FRI APR 06 2001

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

1025 PM    RED CLOUD                 NE    60 MPH TSTM GUST
04/06/01   WEBSTER                         DOWN TREE LIMBS
Special weather statement, Apr 6, 10:43 PM CDT, 1 hour 24 minutes before
KSZ006-007-018-019-070415-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
1043 PM CDT FRI APR 6 2001

...TORNADO WATCH CANCELLED FOR PARTS OF NORTH CENTRAL
KANSAS...

TORNADO WATCH NUMBER 100 HAS BEEN CANCELLED FOR SMITH...
OSBORNE...JEWELL AND MITCHELL COUNTIES.  SHOWERS AND A FEW
THUNDERSTORMS WILL STILL BE POSSIBLE OVERNIGHT...BUT THE THREAT OF
SEVERE WEATHER HAS SHIFTED EAST.

A WIND ADVISORY IS IN EFFECT THROUGH SATURDAY MORNING FOR SUSTAINED
SOUTHWEST WINDS OF 30 TO 40 MPH AND GUSTS TO 55 MPH.

DROZD
Special weather statement, Apr 6, 10:53 PM CDT, 1 hour 14 minutes before
NEZ060-061-072>074-082>084-070430-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
1053 PM CDT FRI APR 6 2001

...TORNADO WATCH CANCELLED FOR PARTS OF SOUTH CENTRAL NEBRASKA...

TORNADO WATCH NUMBER 100 HAS BEEN CANCELLED FOR BUFFALO...DAWSON...
GOSPER...PHELPS...FURNAS...HARLAN...KEARNEY AND FRANKLIN COUNTIES.
SHOWERS AND A FEW THUNDERSTORMS WILL STILL BE POSSIBLE OVERNIGHT...
BUT THE THREAT OF SEVERE WEATHER HAS SHIFTED EAST.

A WIND ADVISORY IS IN EFFECT THROUGH SATURDAY MORNING FOR SUSTAINED
SOUTHWEST WINDS OF 30 TO 40 MPH AND GUSTS TO 55 MPH.

DROZD
Special weather statement, Apr 6, 11:42 PM CDT, 25 minutes before
NEZ039>041-046>049-062>064-075>077-085>087-070500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
1142 PM CDT FRI APR 6 2001

...TORNADO WATCH CANCELLED FOR SOUTH CENTRAL NEBRASKA...

TORNADO WATCH NUMBER 100 HAS BEEN CANCELLED FOR VALLEY...GREELEY...
SHERMAN...HOWARD...NANCE...MERRICK...POLK...HALL...HAMILTON...YORK...
ADAMS...CLAY...FILLMORE...WEBSTER...NUCKOLLS AND THAYER COUNTIES.
SHOWERS AND A FEW THUNDERSTORMS WILL STILL BE POSSIBLE OVERNIGHT...
BUT THE THREAT OF SEVERE WEATHER HAD GREATLY DIMINISHED.

A WIND ADVISORY IS IN EFFECT THROUGH SATURDAY MORNING FOR SUSTAINED
SOUTHWEST WINDS OF 30 TO 40 MPH AND GUSTS TO 55 MPH.

DROZD

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 6, 9:34 PM CDTSevere Thunderstorm WarningGIDFurnas26 min
Apr 6, 10:04 PM CDTSevere Thunderstorm WarningGIDFranklin, Webster26 min
Apr 6, 10:20 PM CDTSevere Thunderstorm WarningGIDAdams, Kearney25 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2001Every severe thunderstorm warning in 2001

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.