Alert archive / Nebraska / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 65, NWS Omaha, NE

May 10, 2003Pawnee County, Richardson County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at May 10, 2003, 2:52 AM CDT for Pawnee County, Richardson County, Nebraska. It was in force for 38 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 10, 2003, 2:52 AM CDT (07:52 UTC)
Expired: May 10, 2003, 3:30 AM CDT
In force: 38 min
Issued by: NWS Omaha, NE
Area: Counties, with a storm outline in the text

Counties Pawnee County, NE, Richardson County, NE

The radar

The Topeka radar (KTWX), 118 km from the middle of the area, began a volume at 07:54 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

Topeka, KS (KTOP), launched 00:00Z, 7.9 hours before the alert went out and 121 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: 173 J/kg
Mixed-layer CIN: -412 J/kg
Mixed-layer LCL: 1579 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 422 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

387 
WUUS53 KOAX 100752
SVROAX
NEC133-147-100830-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA NE
252 AM CDT SAT MAY 10 2003

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PAWNEE COUNTY IN SOUTHEAST NEBRASKA
  RICHARDSON COUNTY IN SOUTHEAST NEBRASKA

* UNTIL 330 AM CDT

* AT 248 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES SOUTHWEST OF DU BOIS...OR ABOUT 31
  MILES WEST OF FALLS CITY...MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HUMBOLDT...DU BOIS
  DAWSON...STELLA...VERDON

IF YOU ARE IN THE WARNED AREA...PREPARE FOR DAMAGING WINDS...LARGE
HAIL...HEAVY RAIN AND DANGEROUS LIGHTNING. GET INTO A REINFORCED
BUILDING. STAY AWAY FROM WINDOWS AND GLASS DOORS.

LAT...LON 3999 9629 3985 9615 4013 9562 4027 9582

$$

CHERMOK

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 Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at May 10, 2:50 AM CDT, 2 minutes earlier.

Area forecast discussion, May 10, 2:50 AM CDT, 2 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
250 AM CDT SAT MAY 10 2003

SURFACE ANALYSIS AT 06Z SHOWED LOW PRESSURE OVER SWRN CORNER OF KS
WITH A WARM FRONT EXTENDING FROM THE LOW ACROSS SRN KS INTO NORTH
CENTRAL MO. UPPER LOW WAS OVER NWRN CO. SCT CONVECTION HAD DEVELOPED
RECENTLY ALONG THE KS BORDER IN SERN NEB ALONG H85 CONVERGENCE ZONE.
SHOWERS AND THUNDERSTORMS LIKELY ACROSS ALL THE AREA TODAY AS SFC
LOW MOVES NORTHEAST ALONG THE FRONT AND UPPER WAVE LIFTS ACROSS THE
CENTRAL PLAINS. SFC LOW EAST OF AREA TONIGHT BUT CHANCE OF SHOWERS
WILL CONTINUE AS UPPER SYSTEM GRADUALLY SHIFTS EAST.  WILL LEAVE
SUNDAY DRY FOR NOW BUT DEPENDING HOW FAR EAST UPPER LOW ACTUALLY
MAKES IT SOME INSTABILITY SHOWERS MAY BE POSSIBLE IN ERN AREAS IN
THE AFTN.

DRY PERIOD STILL LOOKS GOOD FOR MONDAY WITH MODEL DIFFERENCES SHOWING
UP IN THE MONDAY NIGHT AND TUESDAY TIME FRAME. GFS LOOKS OVERDONE IN
HANDLING OF FEATURES DURING THIS TIME AS MENTIONED BY HPC. LITTLE
IF ANY CHANGE AT THIS TIME DUE TO UNCERTAINTY OF MODELS.

.OMA...NONE.

FOBERT

Hazardous weather outlook, May 9, 5:40 PM CDT, 9 hours 12 minutes before

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-101100-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
540 PM CDT FRI MAY 9 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PARTS OF EASTERN NEBRASKA
AND SOUTHWEST IOWA.

.DAY ONE...TONIGHT AND SATURDAY

THERE IS A CHANCE FOR A FEW THUNDERSTORMS IN SOUTHEASTERN
NEBRASKA LATE TONIGHT...HOWEVER NO SEVERE STORMS ARE EXPECTED. A
STORM SYSTEM MOVING OUT OF SOUTHERN COLORADO WILL MOVE EAST
TONIGHT. SHOWERS WILL MOVE INTO SOUTHEASTERN NEBRASKA LATE
TONIGHT...WITH A FEW EMBEDDED THUNDERSTORMS POSSIBLE.

THE STORM SYSTEM WILL CONTINUE TO MOVE ACROSS NORTHERN KANSAS AND
BE OVER NORTHWESTERN MISSOURI BY SATURDAY AFTERNOON. WIDESPREAD
SHOWERS ARE EXPECTED ACROSS THE AREA WITH A FEW EMBEDDED
THUNDERSTORMS POSSIBLE. NO SEVERE STORMS ARE EXPECTED FOR
SATURDAY.

.DAYS TWO THROUGH SEVEN...SATURDAY NIGHT THROUGH FRIDAY

THERE WILL ALSO BE ANOTHER CHANCE OF THUNDERSTORMS TUESDAY AND
WEDNESDAY ACROSS EASTERN NEBRASKA AND SOUTHWEST IOWA...BUT THE
CHANCE FOR SEVERE WEATHER IS UNCERTAIN AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

STORM SPOTTER ACTIVATION IS NOT ANTICIPATED TONIGHT OR SATURDAY.

GRIFFIS

In the hours before

Local storm report, May 9, 8:57 PM CDT, 5 hours 55 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NE
857 PM CDT FRI MAY 09 2003

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

0510 PM    7 NW MONROE               NE   .75 INCH HAIL
05/08/03   PLATTE                         REPORTED BY PUBLIC.

0550 PM    3 SW DOUGLAS              NE   .75 INCH HAIL
05/08/03   OTOE                           REPORTED BY PUBLIC.

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 3:30 AM CDT	Severe Thunderstorm Warning	OAX	Richardson	30 min
May 10, 3:43 AM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Pawnee	32 min
May 10, 3:58 AM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Richardson	32 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2003 Every severe thunderstorm warning in 2003

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.