Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 41, NWS Hastings, NE
NWS Hastings, NE issued this severe thunderstorm warning at May 11, 2002, 2:15 AM CDT for Harlan County, Nebraska. It was in force for 45 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 11, 2002, 2:15 AM CDT (07:15 UTC)
- Expired
- May 11, 2002, 3:00 AM CDT
- In force
- 45 min
- Issued by
- NWS Hastings, NE
- Area
- Counties, with a storm outline in the text
County Harlan County, NE
The radar
The Grand Island radar (KUEX), 86 km from the middle of the area, began a volume at 07:18 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
| Time | Report | Where | Remark |
|---|---|---|---|
| May 11, 2:35 AM CDT | Hail 0.75 | Orleans, 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.
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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 7.3 hours before the alert went out and 142 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1882 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 342 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KGID 110715 SVRGRI NEC083-110800- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE HASTINGS NE 213 AM CDT SAT MAY 11 2002 THE NATIONAL WEATHER SERVICE IN HASTINGS HAS EXTENDED A * SEVERE THUNDERSTORM WARNING FOR... HARLAN COUNTY IN SOUTH CENTRAL NEBRASKA * UNTIL 300 AM CDT * AT 208 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED ANOTHER SEVERE THUNDERSTORM 12 MILES SOUTHWEST OF STAMFORD...OR ABOUT 15 MILES NORTHEAST OF NORTON...MOVING NORTHEAST AT 40 MPH. SOME LOCATIONS IN THE PATH OF THIS SEVERE STORM INCLUDE STAMFORD... ORLEANS...ALMA AND HUNTLEY. PEOPLE IN HARLAN COUNTY SHOULD SEEK SHELTER IN A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. THE PRIMARY SEVERE WEATHER THREAT IS LARGE HAIL THE SIZE OF NICKELS. LAT...LON 4032 9961 4002 9961 4003 9918 4034 9919 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 11, 1:14 AM CDT, 1 hour 1 minute earlier.
Area forecast discussion, May 11, 1:14 AM CDT, 1 hour 1 minute before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HASTINGS NE 114 AM CDT SAT MAY 11 2002 ...ONGOING CONVECTION MAIN CONCERN... STORMS ARE BEGINNING TO FILL IN OVER CWA THIS MORNING. STORMS APPROACHING FROM THE SW AT ABOUT 40KTS OR SO. STORMS FEEDING ON RETURN OF LOW LEVEL MOISTURE TO THE AREA. 24HR CHANGE OF SFC DEW POINTS INDICATE A RISE OF ABOUT 30 DEGREES OVER NORTH CENTRAL AND NORTHWEST KS. PCPN SHOULD CONTINUE THROUGH MOST OF THE DAY AND WILL CONTINUE CATEGORICAL POPS TODAY. LATER THIS AFTERNOON..SFC LOW SHIFTS EAST AND WINDS ACROSS THE CWA SWITCH TO THE NW. TEMPS MAY NOT RISE ALL THAT MUCH OVER NRN SECTIONS OF THE CWA. PCPN CHANCES SHIFT SOUTHWARD TONIGHT. WILL CARRY SLGT POPS MID SECTIONS AND HIGHER POPS SOUTH. NEXT CHANCE FOR PCPN COMES MID WEEK. NO MAJOR CHANGES TO THE EXTENDED. .GID...NONE. DEE
The office that day
Everything else NWS Hastings, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 1:27 AM CDT | Severe Thunderstorm Warning | GID | Furnas | 33 min |
| May 11, 2:29 AM CDT | Severe Thunderstorm Warning | GID | Clay | 46 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2002Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.