Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 75, NWS Hastings, NE

May 2, 2001Valley County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at May 2, 2001, 12:19 AM CDT for Valley County, Nebraska. It was in force for 26 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
May 2, 2001, 12:19 AM CDT (05:19 UTC)
Expired
May 2, 2001, 12:45 AM CDT
In force
26 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 05:19 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
May 2, 12:35 AM CDTHail 0.75Ord, 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, 5.3 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 00:00Z on 2001-05-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 121 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 2001-05-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
121 J/kg
Mixed-layer CIN
-240 J/kg
Mixed-layer LCL
2340 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
485 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 020519
SVRGRI
NEC175-020545-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
1219 AM CDT WED MAY 2 2001

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

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

* UNTIL 1245 AM CDT

* AT 1212 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES WEST OF ELYRIA...OR ABOUT 34 MILES
  NORTHEAST OF BROKEN BOW...MOVING EAST AT 40 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  ORD AT 1225 AM CDT

PEOPLE IN NORTHERN VALLEY COUNTY SHOULD SEEK SHELTER IN A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS. DAMAGING THU3NDERSTORM WIND IN 
EXCESS OF 60 MPH AND LARGE HAIL THE SIZE OF DIMES IS LIKELY.

$$

LAT...LON 4177 9920 4154 9915 4152 9875 4189 9875

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 May 1, 1:30 PM CDT, 10 hours 49 minutes earlier.

Area forecast discussion, May 1, 1:30 PM CDT, 10 hours 49 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
130 PM CDT TUE MAY 1 2001

...TEMPS/RAIN CHCS REMAIN THE MAIN QUESTIONS OF FCST...

POWERFUL 140KT H3 JET SHOWN ON UAA & QUITE EVIDENT ON WV LOOP PUSHING
OFF THE PAC INTO NW US...WL BE THE CATALYST FOR OUR CHANGE TO A VERY
ACTIVE WX PATTERN THRU THE WEEKEND AS UPPER FLOW BUCKLES AND LEADS TO
SW LO...WHICH WAITS TIL SAT/SUN TO MOVE ONTO THE PLAINS.

LLVL MOISTURE IS IMPROVING OVER PLAINS...W/ A STREAM OF 60+F READINGS
FROM ERN TX/OK/KS/NEB INTO IA & SRN MN. H85 FLOW ON AM UAA WAS FROM
THE SW WITH 10C DWPT POOL FROM NE TX/E OK. 16Z PROFILERS STILL SHOW
THIS SW FLOW...BUT MDLS SUGGEST A BACKING TO THE SOUTH THIS AFTN &
EVENING...ALLOWING DECENT MOISTURE INTO ERN CWA ANYWAY.

COLD FRONT EXTENDS FROM ONL TO SNY AT NOON. MVMT IS SLIGHTLY SLOWER
THAN WHAT MDLS SUGGESTED YSTY/LAST NIGHT...WHICH WILL LEAD TO TSRA
CHCS IN NRN CWA THIS EVE...THEN SHIFTING INTO SE NEB OVERNIGHT. WILL
HAVE TO REWORD FCST AS SUCH. STILL ERN AREAS LOOK TO HAVE BEST SHOT
AND WILL KEEP AT LEAST LIKELY POPS.

COLD FRONT THRU AREA BY 12Z WED & AGREE W/ MID SHIFT THAT SUN WL HELP
GET US BACK INTO THE 60/65 RANGE. PCPN CHC DURING DAY SEEM MINIMAL...
SO WL NOT UP THE 20%. STILL LOOKS LIKE PCPN MOVES BACK INTO CWA LATE
WED NIGHT INTO THURSDAY AS WV EJECT INTO PLAINS FROM THE SW & PERHAPS
COMBINES W/ RRQ OF JET TO OUR NRN TO PRODUCE SIGNIFICANT OVERRUNNING.
WILL KEEP LIKELY POPS. BY THU...CLDCVR AND CONTD CAA W/ MAKE FOR A
COOL DAY. MAY KEEP TEMPS IN THE 50S NW TO 60S SE.

SAME SETUP THU NIGHT INTO FRIDAY AS NEXT SIGNIFICANT WAVE ROTATES UP
AROUND THE UPPER LOW. HAVE TO THINK AVN HAS BLOWN A FUSE IN GIVING SE
1/2 OF CWA 2 TO 4 INCHES OF RAIN FROM 06Z FRI-06Z SAT. STILL...GOOD
CHC OF RAIN/TSRAS LOOKS IN ORDER.

AVN TRENDING TOWARD LIFTING UPPER LO MORE N AS IT PHASES W/ NEXT NW
US SYSTEM...PULLING A BULK OF THE PCPN N & E OF AREA BY WEEKEND. WONT
BUY INTO THIS JUST YET AS 60HR ETA FCST HAS A MORE SOUTHERN POSITION
OF UPPER LO IN SW...MAKING PHASING MORE DIFFICULT. NOGAPS & CANADIAN
SUGGEST THAT EVEN IF THIS SCENARIO OCCURS...IT WL BE SLOWER THAN AVN
SHOWS...KEEPING DRY SLOT OUT OF CWA MUCH OF WEEKEND. WONT CHANGE THE
EXTENDED MUCH. JUST WORD FRI AS LIKELY PCPN -VS- CHC ON WEEKEND. FRI
WL PROBABLY BE COOLER THAN WEEKEND AS WELL. DRY BY TUE...IF NOT MON.

.GID...NONE.

GURNEY

In the hours before

Special weather statement, May 1, 8:47 PM CDT, 3 hours 32 minutes before
NEZ046-061-020245-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
847 PM CDT TUE MAY 1 2001

...SEVERE THUNDERSTORM WATCH #183 HAS BEEN CANCELLED FOR BUFFALO AND
SHERMAN COUNTIES IN SOUTH CENTRAL NEBRASKA...

SHOWERS AND THUNDERSTORMS ARE STILL EXPECTED OVER BUFFALO AND SHERMAN
COUNTIES OVERNIGHT. NONE THOUGH ARE EXPECTED TO BECOME SEVERE.

FOR THE REST OF TONIGHT...THE THREAT FOR SEVERE WEATHER WILL BE
FOCUSED MAIN%LY EAST OF A LINE FROM ST PAUL TO WOOD RIVER.

PLEASE STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL MEDIA
FOR THE LATEST SEVERE WEATHER INFORMATION.

DEE

The office that day

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

IssuedProductOfficeCountiesLasted
May 2, 12:30 AM CDTSevere Thunderstorm WarningGIDGreeley45 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.