Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 38, NWS Hastings, NE

May 6, 2002Clay County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at May 6, 2002, 2:57 AM CDT for Clay County, Nebraska. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 6, 2002, 2:57 AM CDT (07:57 UTC)
Expired: May 6, 2002, 4:00 AM CDT
In force: 63 min
Issued by: NWS Hastings, NE
Area: Counties, with a storm outline in the text

County Clay County, NE

The radar

The Grand Island radar (KUEX), 35 km from the middle of the area, began a volume at 07:58 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 8.0 hours before the alert went out and 172 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: 1550 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1621 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 112 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KGID 060757
SVRGRI
NEC035-060900-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
257 AM CDT MON MAY 6 2002

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

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

* UNTIL 400 AM CDT

* AT 253 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 8 MILES SOUTHWEST OF FAIRFIELD TO
  EDGAR...OR FROM 17 MILES SOUTHEAST OF HASTINGS TO 29 MILES
  SOUTHEAST OF HASTINGS...MOVING NORTHEAST AT 25 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  FAIRFIELD AT 305 AM CDT
  CLAY CENTER AT 315 AM CDT
  SARONVILLE AT 330 AM CDT
  SUTTON AT 335 AM CDT

PEOPLE IN CLAY COUNTY SHOULD SEEK SHELTER IN A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.

LAT...LON 4036 9826 4037 9784 4067 9785 4068 9824

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 6, 1:35 AM CDT, 1 hour 22 minutes earlier.

Area forecast discussion, May 6, 1:35 AM CDT, 1 hour 22 minutes before

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
135 AM CDT MON MAY 6 2002

SMALL CLUSTER OF TSRA CONTS OVR NRN HALF OF CWA AS OF 0630Z.
ACTIVITY LKS TO BE LLVL JET FED WITH 50 KT ON THE SRN KS PROFILERS.
BEST MSTR CNVRGNC IND OVR THE SRN CWA...BUT WARM ADVCTN IN THE MID
LVLS APPARENTLY HAS SAFELY CAPPED THAT AREA FOR THE NGT...AND
PROBABLY FOR MON/MON NGT AS WELL.

BNDRY EXTENDING FM WRN KS LOW EXPECTED AGAIN NR THE KS/NEB BRDR BY
MON EVE.  WL ONLY GO WITH A SLGT CHC EVE TSRA FOR THAT AREA AS PER
REASONING ABOVE.  BTR CHC FOR THE NRN ZONES WITH MSTR CNVRGING ON
THE HIGH PLNS OF NEB FOLLOWED BY AN EWD PROGRESSION OF TSRA ON MON
NGT...ON NRN EDGE OF 850 MB MSTR AXIS AND MID LVL CAP.  THERMAL TROF
META IND AT 700 MB TO X NRN/CNTRL NEB IN SPPRT.  LTD FACTORS INCLUDE
A LACK OF FORCING WITH 850 WNDS ONLY PROGGED AT 30 TO 35 KT OVR AREA
IN QN.  LATE NGT CHC POPS WL COVER IT FOR NOW...FOLLOWED BY CHC SHRA
ON TUE MRNG FOR NERN ZONES.

ONGOING TEMPS NOT FAR FM NEW MOS...MINOR ADJUSTMENTS ONLY.

.GID...NONE.

09

In the hours before

Special weather statement, May 5, 9:23 PM CDT, 5 hours 34 minutes before

KSZ005>007-017>019-060238-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
923 PM CDT SUN MAY 5 2002

...TORNADO WATCH NUMBER 226 CANCELLED FOR NORTH CENTRAL KANSAS...

THE TORNADO WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES IN
NORTH CENTRAL KANSAS...

PHILLIPS...SMITH...JEWELL...ROOKS...OSBORNE AND MITCHELL.

THE THREAT OF SEVERE WEATHER HAS SHIFTED EASTWARD.

Local storm report, May 5, 10:39 PM CDT, 4 hours 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1039 PM CDT SUN MAY 05 2002

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

1035 PM    HUBBELL                   NE   1.75 INCH HAIL
05/05/02   THAYER                         REPORTED BY STORM
                                          SPOTTER.

Special weather statement, May 5, 11:00 PM CDT, 3 hours 57 minutes before

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-060500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
1100 PM CDT SUN MAY 5 2002

...TORNADO WATCH NUMBER 229 IS NO LONGER IN EFFECT...

THE TORNADO WATCH FOR SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL
KANSAS HAS EXPIRED.  NO COUNTIES IN SOUTH CENTRAL NEBRASKA OR NORTH
CENTRAL KANSAS ARE IN A SEVERE WEATHER WATCH.

WIDESPREAD SEVERE WEATHER IS NOT EXPECTED FOR THE REST OF THE NIGHT.
HOWEVER...THUNDERSTORMS ARE STILL EXPECTED TO DEVELOP...ESPECIALLY
OVER NORTH CENTRAL KANSAS...AND SOUTH CENTRAL NEBRASKA COUNTIES EAST
OF ROUTE 281...AND SOUTH OF INTERSTATE 80.

09

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 7:18 PM CDT	Severe Thunderstorm Warning	GID	Furnas, Harlan	42 min
May 5, 7:29 PM CDT	Severe Thunderstorm Warning	GID	Hamilton, Merrick, Polk	46 min
May 5, 7:37 PM CDT	Severe Thunderstorm Warning	GID	Phelps	38 min
May 5, 7:50 PM CDT	Severe Thunderstorm Warning	GID	Howard	40 min
May 5, 8:27 PM CDT	Severe Thunderstorm Warning	GID	Franklin, Kearney	33 min
May 5, 8:43 PM CDT	Severe Thunderstorm Warning	GID	Sherman	47 min
May 5, 9:04 PM CDT	Severe Thunderstorm Warning	GID	Greeley	41 min
May 5, 9:08 PM CDT	Severe Thunderstorm Warning	GID	Webster	37 min
May 5, 9:37 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls	53 min
May 5, 10:09 PM CDT	Severe Thunderstorm Warning	GID	Thayer	66 min
May 5, 10:26 PM CDT	Tornado Warning	GID	Thayer	34 min
May 6, 12:34 AM CDT	Severe Thunderstorm Warning	GID	Merrick, Polk	56 min
May 6, 1:47 AM CDT	Severe Thunderstorm Warning	GID	Hall, Hamilton, Merrick	58 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.