Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 241, NWS Hastings, NE

August 26, 2002Hall County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Aug 26, 2002, 11:54 AM CDT for Hall County, Nebraska. It was in force for 51 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: Aug 26, 2002, 11:54 AM CDT (16:54 UTC)
Expired: Aug 26, 2002, 12:45 PM CDT
In force: 51 min
Issued by: NWS Hastings, NE
Area: Counties, with a storm outline in the text

County Hall County, NE

The radar

The Grand Island radar (KUEX), 65 km from the middle of the area, began a volume at 16:56 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 12:00Z, 4.9 hours before the alert went out and 181 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: 691 J/kg
Mixed-layer CIN: -118 J/kg
Mixed-layer LCL: 1154 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 55 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.

355 
WUUS53 KGID 261654
SVRGRI
NEC079-261745-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
1154 AM CDT MON AUG 26 2002

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

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

* UNTIL 1245 PM CDT

* AT 1151 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES WEST OF CAIRO...OR ABOUT 24 MILES WEST
  OF GRAND ISLAND...MOVING SOUTHEAST AT 25 MPH.

SOME LOCATIONS IN THE PATH OF THIS SEVERE STORM INCLUDE CAIRO...WOOD 
RIVER...ALDA...GRAND ISLAND AND DONIPHAN.

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

THE PRIMARY SEVERE WEATHER THREAT IS STRONG AND DAMAGING WINDS IN
EXCESS OF 60 MPH.

LAT...LON 4103 9829 4104 9871 4071 9872 4071 9829

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 26, 2:10 AM CDT, 9 hours 44 minutes earlier.

Area forecast discussion, Aug 26, 2:10 AM CDT, 9 hours 44 minutes before

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
210 AM CDT MON AUG 26 2002

MAIN FORECAST CHALLENGE THIS TIME IS WHEN/WHERE/IF THUNDERSTORMS
WILL CROSS GID CWA.

00Z UA ANALYSES HAD NEB ON NORTHEASTERN EDGE OF SW U.S. RIDGING. SFC
ANALYSIS HAS EXTREMELY WEAK GRADIENT WITH WEAK RIDGING FROM OH
VALLEY TO SE COLORADO.

MODELS IN GENERAL AGREEMENT LEAVING WEAK SFC PATTERN ACROSS NEB/KS.
WITH NO BOUNDARIES AND NO NOCTURNAL LOW LEVEL JET, WILL NEED UPPER
LEVEL DYNAMICS TO PRODUCE LIFT. UPPER LOW EXPECTED TO DEVELOP OVER
WESTERN STATES AND TURN FLOW TOWARD THE WSW INTO NEB. SWRN STATES
RIDGE REMAINS IN PLACE, THOUGH. SO TIMING OF FEATURES APPEARS
DIFFICULT.

TONIGHT LOOKS LIKE A REPEAT OF SUN NIGHT WITH TSTMS STAYING WELL N
OF GID CWA. WITH UPPER FLOW SHIFTING A LITTLE SOUTHWEST AND SOME
WEAK DIFFLUENCE OVER GID CWA, WILL CARRY MINOR POPS TUE NIGHT AND
WED NIGHT.

EXTENDED MODELS SEND NO MAJOR FEATURES ACROSS THE CENTRAL STATES
THURSDAY THROUGH SUNDAY. ONE MINOR WAVE SHOWN ON CANADIAN AND MRF
MAY BE ENOUGH TO PRODUCE SOME TSTMS FRIDAY.

TSTMS CANNOT BE RULED OUT ENTIRELY ANY DAY...ESPECIALLY DURING
THE NIGHTTIME HOURS.

.GID...NONE.

SCHURR

In the hours before

Special weather statement, Aug 26, 6:52 AM CDT, 5 hours 2 minutes before

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-271200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HASTINGS NE
652 AM CDT MON AUG 26 2002

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

SCATTERED THUNDERSTORMS WILL MOVE SOUTH ACROSS CENTRAL NEBRASKA
THIS MORNING...AND AFFECT AREAS GENERALLY NORTH OF INTERSTATE 80.
HAIL TO ONE INCH IN DIAMETER IS THE PRIMARY CONCERN FROM THE
STORMS...ALTHOUGH WIND GUSTS TO 40 MPH IS ALSO POSSIBLE.  WIDESPREAD
SEVERE WEATHER IS NOT EXPECTED...THEREFORE SPOTTERS SHOULD NOT BE
NEEDED.

THUNDERSTORMS WILL MOVE OUT OF CENTRAL NEBRASKA BY THIS AFTERNOON...
AND WEAK HIGH PRESSURE AT THE SURFACE AND ALOFT IS FORECAST TO HOLD
STEADY ACROSS NEBRASKA AND KANSAS.  IT SHOULD PREVENT THUNDERSTORMS
FROM DEVELOPING OVER SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL KANSAS
INTO TONIGHT.

THE ATMOSPHERE WILL GRADUALLY BECOME MORE FAVORABLE FOR PRODUCING
ADDITIONAL STORMS AS THE WEEK PROGRESSES.

CMF

Local storm report, Aug 26, 9:06 AM CDT, 2 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
906 AM CDT MON AUG 26 2002

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

0817 AM    8 NE FULLERTON            NE   1 INCH HAIL
08/26/02   NANCE                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Special weather statement, Aug 26, 11:04 AM CDT, 50 minutes before

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-271200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE HASTINGS NE
1104 AM CDT MON AUG 26 2002

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

WEAK HIGH PRESSURE AT THE SURFACE AND ALOFT IS EXPECTED TO HOLD
STEADY ACROSS NEBRASKA AND KANSAS.  IT SHOULD PREVENT THUNDERSTORMS
FROM DEVELOPING OVER SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL KANSAS
THROUGH THE OVERNIGHT HOURS.

DEE

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 26, 8:06 AM CDT	Severe Thunderstorm Warning	GID	Nance	39 min
Aug 26, 8:25 AM CDT	Severe Thunderstorm Warning	GID	Merrick	65 min
Aug 26, 9:24 AM CDT	Severe Thunderstorm Warning	GID	Howard	66 min
Aug 26, 11:28 AM CDT	Severe Thunderstorm Warning	GID	Sherman	32 min
Aug 26, 11:40 AM CDT	Severe Thunderstorm Warning	GID	Buffalo	50 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.