Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 206, NWS Hastings, NE

August 12, 2002York County, Nebraska

NWS Hastings, NE issued this severe thunderstorm warning at Aug 12, 2002, 12:57 AM CDT for York County, Nebraska. It was in force for 48 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 12, 2002, 12:57 AM CDT (05:57 UTC)
Expired: Aug 12, 2002, 1:45 AM CDT
In force: 48 min
Issued by: NWS Hastings, NE
Area: Counties, with a storm outline in the text

County York County, NE

The radar

The Grand Island radar (KUEX), 93 km from the middle of the area, began a volume at 06:00 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, 6.0 hours before the alert went out and 117 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: 1357 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 2325 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

005 
WUUS53 KGID 120557
SVRGRI
NEC185-120645-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
1257 AM CDT MON AUG 12 2002

THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  YORK COUNTY IN EAST CENTRAL NEBRASKA

* UNTIL 145 AM CDT

* AT 1255 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 5 MILES NORTH OF BRADSHAW...OR ABOUT 9 MILES
  NORTHWEST OF YORK...MOVING EAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BENEDICT AT 105 AM CDT
  YORK AT 110 AM CDT
  WACO AT 120 AM CDT
  GRESHAM AT 125 AM CDT

PEOPLE IN YORK 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 4102 9786 4072 9782 4072 9736 4105 9737

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 11, 3:32 PM CDT, 9 hours 25 minutes earlier.

Area forecast discussion, Aug 11, 3:32 PM CDT, 9 hours 25 minutes before

SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
332 PM CDT SUN AUG 11 2002

POPS THROUGH MONDAY...THEN TEMPERATURES ARE FORECAST CONCERNS.

STRONG AUGUST UPPER LOW PRESSURE MOVING TOWARD NORTHEAST MONTANA AND
INTENSIFYING AS PROGGED. FRONT AND SHORTWAVE ROUNDING THE BEND INTO
WESTERN SOUTH DAKOTA FIRE CONVECTION THERE...AND ISOLATED STORMS
TRYING TO GO NEAR VALENTINE. MID LEVEL WINDS FIELDS WEAKEN AS WE
MOVE SOUTH...BUT ATMOSPHERE IS JUICY WITH MID 60 DEWPOINTS
PREVALENT. BOUNDARIES FROM MORNING/EARLY AFTERNOON CONVECTION SEEM
TO BE EARLY EVENING FOCUS...WITH BEST SHOT WESTERN ZONES AS STORMS
DRIFT EAST THIS EVENING FROM PRE-FRONTAL TROUGH. ACTION SHOULD FIRE
AGAIN LATER TONIGHT...AND FRONT...LLJ AND UPPER WAVE TEAM TO
GENERATE THUNDERSTORMS MOVING SOUTHEAST ACROSS NORTHEAST HALF OF THE
CWFA. HAVE INCLUDED HIGHER POPS THERE...AS OVERNIGHT HOURS WILL BE
OF SOME INTEREST FOR BOTH HAIL AND STRONG WINDS. OF NOTE IS FORECAST
OF AREA OF DIFFLUENT MID LEVEL FLOW OVER EASTERN CWFA BY 06Z...
POSSIBLY ENHANCE CONVECTIVE POTENTIAL AND POSSIBLY ISOLATE HEAVY
RAINS.

MONDAY IS SOMEWHAT DIFFICULT AS FRONT BISECTS REGION. HAVE INCLUDED
POPS ALL BUT WESTERN 5 ZONES. LINGERING LLJ AND FROPA WILL LEAD TO
ONGOING CONVECTION AT SUNRISE NORTHEAST/EAST ZONES...AND AS THE
FRONT MOVES ACROSS THE CWFA...SOUTHEAST ZONES WILL HAVE A CHANCE.
TEMPERATURES WILL VARY WIDELY...GENERALLY FROM THE UPPER 70S IN THE
NORTHWEST CWFA TO NEAR 90 SOUTHEAST. AVN/NGM/ETA ALMOST UNIFORM IN
PLACING SURFACE FRONT FROM BEATRICE TO BELOIT BY 21Z...AND DO EXPECT
AFTERNOON CONVECTION TO REFIRE ALONG IT. KEPT THE CONTINUE SHOT OF
STORMS THROUGH THE EVENING HOURS FAR SOUTHEAST.

AM BANKING ON AT LEAST SOME SUNSHINE TUESDAY...ALTHOUGH PASSAGE OF
H5 TROUGH DOESNT SLIP THROUGH UNTIL LATE. PREVIOUS FORECAST HAD
LOWER 80S...AND HAVE HELD AS SUCH...BUT GUIDANCE ALL SUGGESTS COOLER
70S MORE LIKELY...WITH PLENTY OF CLOUDS. MIDNIGHT SHIFT MAY WANT TO
ADJUST TO MORE FALL LIKE TEMPERATURES.

THE EXTENDED RANGE MODELS STILL BRING FRONTS THE AREA WITH VARYING
DEGREES OF SUCCESS. EC AND CANADIAN ARE QUITE BOLD IN FROPA FOR THE
DAY 4 TIME FRAME...AVN JUST A GLANCING BLOW. ALL GENERALLY ADVERTISE
STRONG FRONT FOR THE WEEKEND...AND POSSIBLY A ROUND OF RAINFALL. FOR
NOW CONTINUITY IS BEST UNTIL A BETTER HANDLE ON THINGS CAN BE HAD. NO
MAJOR CHANGES.

.GID...NONE.

MORITZ

In the hours before

Local storm report, Aug 11, 9:07 PM CDT, 3 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
907 PM CDT SUN AUG 11 2002

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

0829 PM    2 W WILSONVILLE           NE   .75 INCH HAIL
08/11/02   FURNAS                         REPORTED BY STORM
                                          SPOTTER.

0835 PM    7 W ELYRIA                NE   1.75 INCH HAIL
08/11/02   VALLEY                         NICKEL TO GOLFBALL SIZE
                                          HAIL COVERING THE
                                          GROUND. REPORTED BY
                                          STORM SPOTTER.

07

Local storm report, Aug 11, 9:46 PM CDT, 3 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
946 PM CDT SUN AUG 11 2002

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

0920 PM    5 N ARCADIA               NE   .88 INCH HAIL
08/11/02   VALLEY                         REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

0941 PM    ARCADIA                   NE   .75 INCH HAIL
08/11/02   VALLEY                         REPORTED BY STORM
                                          SPOTTER.

07

Local storm report, Aug 11, 10:18 PM CDT, 2 hours 39 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1018 PM CDT SUN AUG 11 2002

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

1016 PM    6 W PHILLIPSBURG          KS   1 INCH HAIL
08/11/02   PHILLIPS                       REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Local storm report, Aug 11, 10:46 PM CDT, 2 hours 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1046 PM CDT SUN AUG 11 2002

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

1034 PM    3 SE BOELUS               NE   60 MPH TSTM GUST
08/11/02   HOWARD                         REPORTED BY STORM
                                          SPOTTER.

Local storm report, Aug 11, 11:21 PM CDT, 1 hour 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1121 PM CDT SUN AUG 11 2002

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

1050 PM    ATHOL                     KS   .75 INCH HAIL
08/11/02   SMITH                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

1110 PM    SMITH CENTER              KS   1 INCH HAIL
08/11/02   SMITH                          REPORTED BY HAM RADIO
                                          OPERATOR.

Local storm report, Aug 11, 11:40 PM CDT, 1 hour 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1140 PM CDT SUN AUG 11 2002

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

1120 PM    SMITH CENTER              KS   WIND DAMAGE
08/11/02   SMITH                          NUMEROUS TREES DOWN
                                          REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 8:18 PM CDT	Severe Thunderstorm Warning	GID	Valley	57 min
Aug 11, 8:22 PM CDT	Severe Thunderstorm Warning	GID	Furnas	53 min
Aug 11, 9:19 PM CDT	Severe Thunderstorm Warning	GID	Sherman, Valley	56 min
Aug 11, 9:53 PM CDT	Severe Thunderstorm Warning	GID	Greeley	67 min
Aug 11, 10:04 PM CDT	Severe Thunderstorm Warning	GID	Howard	56 min
Aug 11, 10:12 PM CDT	Severe Thunderstorm Warning	GID	Sherman	63 min
Aug 11, 10:53 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Hall	67 min
Aug 11, 11:09 PM CDT	Severe Thunderstorm Warning	GID	Merrick, Nance	66 min
Aug 12, 1:45 AM CDT	Severe Thunderstorm Warning	GID	Howard	45 min
Aug 12, 2:06 AM CDT	Severe Thunderstorm Warning	GID	Hall	54 min
Aug 12, 2:20 AM CDT	Severe Thunderstorm Warning	GID	Merrick	40 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.