Alert archive / Nebraska / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 171, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 19, 2000, 11:14 PM CDT for Garfield County, Holt County, Nebraska. It was in force for 61 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 19, 2000, 11:14 PM CDT (04:14 UTC)
- Expired
- Jul 20, 2000, 12:15 AM CDT
- In force
- 61 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
Counties Garfield County, NE, Holt County, NE
The radar
The North Platte radar (KLNX), 142 km from the middle of the area, began a volume at 04:17 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 |
|---|---|---|---|
| Jul 19, 11:15 PM CDT | Hail 0.75 | Amelia, NE | |
| Jul 19, 11:30 PM CDT | Hail 0.88 | Burwell, 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 19, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.2 hours before the alert went out and 184 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
- 1672 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 1660 m above ground
- 0-6 km bulk shear
- 67 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 233 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 8.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KLBF 200414 SVRLBF NEC071-089-200515- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE ISSUED BY NWS RAPID CITY SD 1114 PM CDT WED JUL 19 2000 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA GARFIELD COUNTY IN NORTH CENTRAL NEBRASKA * UNTIL 1215 AM CDT * AT 1106 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 21 MILES NORTH OF BURWELL...MOVING SOUTHEAST AT 25 MPH. * SOME LOCATIONS AFFECTED BURWELL AROUND 1140 PM CDT LARGE HAIL AND DAMAGING WIND GUSTS ARE LIKELY WITH THIS STORM. SEEK A STU}RDY SHELTER AND AVOID WINDOWS UNTIL THE STORM PASSES. CARSTENS
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 North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 19, 3:19 PM CDT, 7 hours 55 minutes earlier.
Area forecast discussion, Jul 19, 3:19 PM CDT, 7 hours 55 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 319 PM CDT WED JUL 19 2000 OVERNIGHT SHOWERS AND MORNING CLOUD COVER HAS LEFT WEAK BOUNDARIES ACROSS CWFA THIS AFTERNOON...ESPECIALLY IN N CENTRAL AND NE. WITH LIGHT PRESSURE GRADIENT OVER AREA...BOUNDARIES WILL BE IMPORTANT FOR FOCUS OF TSRA DEVELOPMENT THIS EVENING. CU FIELDS IN N CENTRAL STARTING TO REVEAL THESE BOUNDARIES THAT WILL AWAIT UPPER LEVEL SUPPORT THIS EVENING. OTHER FOCUS FOR FIRST PERIOD TSRA IS WEAK TROUGH MOVING INTO PANHANDLE PAST BFF AT 19Z. FORECAST CHALLENGE IS POPS TONIGHT THROUGH FRIDAY. UPPER LEVEL SUPPORT WILL BE IN FORM OF H5 SHORTWAVE SEEN ON SATL IMAGERY MOVING THROUGH NRN WY AT MIDDAY. ETA AND AVN SIMILAR WITH THIS VORT MAX WITH NGM WEAK AND NEARLY LOOSING FEATURE OVER NRN NEB THIS EVENING. ETA HAD BETTER HANDLE ON SURFACE FEATURES AND THUS MODEL OF CHOICE. HIGHEST CAPES AND UPPER LEVEL DIVERGENCE BEST EARLY THIS EVENING IN SW AND HAVE PLACED 30 TO 40 PERCENT POPS THERE. FORCING ASSOCIATED WITH SHORTWAVE STRONGER IN N CENTRAL ZONES TO OVERCOME MORE STABLE ENVIRONMENT AND PLACED 30 POPS THERE. IN BETWEEN...SOME UPPER LEVEL DIVERGENCE INDICATED OVER W CENTRAL NEB BY 06Z...ESPECIALLY SHOWN BY 18Z ETA. ETA HINTS AT MCS FORMATION IN SRN PANHANDLE THIS EVENING AND TRACKING SE...WHICH HAS BECOME FAMILIAR SCENARIO THIS SUMMER AND LOOKS REASONABLE. THIS AREA ALSO HAS DEEPEST MOISTURE WITH WEAK H850 JET AND DEWPOINTS UP TO 16 DEG C. ANOTHER POSSIBLE MCS INDICATED FOR LATER TONIGHT OVER N CENTRAL TRACKING SE. GUIDANCE TEMPS LOOK REASONABLE FOR TONIGHT THROUGH THURSDAY. SHORTWAVE PROGGED FOR AROUND 00Z THURSDAY EVENING LOOKS STRONGER WITH BEST DIVERGENCE ACROSS NORTH BUT DEEPER MOISTURE AND INSTABILITY IN SW CWFA. ADDED FRIDAY NIGHT PERIOD FOR TSRA IN EXTENDED FOR WEST AND CONTINUE CHANCES ACROSS CWFA THROUGH SATURDAY. UPPER HIGH OVER SW CONUS REBUILDS NORTHWARD WITH DRIER NRLY FLOW OVER CWFA SUNDAY AND MONDAY FOR DRIER WEATHER. .LBF...NONE. SHEETS
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 10:38 PM CDT | Severe Thunderstorm Warning | LBF | Rock | 67 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2000Every severe thunderstorm warning in 2000
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.