Alert archive / Nebraska / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 102, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 8, 1997, 4:51 PM MDT for Cherry County, Nebraska. It was in force for 49 min. 1 report 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 8, 1997, 4:51 PM MDT (22:51 UTC)
- Expired
- Jul 8, 1997, 5:40 PM MDT
- In force
- 49 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Cherry County, NE
The radar
The North Platte radar (KLNX), 79 km from the middle of the area, began a volume at 22:54 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 8, 5:00 PM MDT | Hail 0.75 | Valentine, 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 nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.9 hours before the alert went out and 163 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
- 112 J/kg
- Mixed-layer CIN
- -370 J/kg
- Mixed-layer LCL
- 1699 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -52 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLBF 082251 RRA SVRLBF NEC031-082340- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 551 PM CDT (451 PM MDT) TUE JUL 8 1997 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE NE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 640 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTH CENTRAL NEBRASKA ...NORTHEASTERN CHERRY COUNTY AT 549 PM CDT...A SEVERE THUNDERSTORM WAS INDICATED BY NORTH PLATTE DOPPLER RADAR 13 MILES SOUTHWEST OF VALENTINE OR 12 MILES EAST NORTHEAST OF MERRITT RESERVOIR MOVING SOUTHEAST AT 5 MPH. THIS STORM IS EXPECTED TO REMAIN IN RURAL AREAS AROUND MERRITT RESERVOIR. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FZROM THE STORM IN A STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. MICHELS
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 8, 1:51 PM MDT, 3 hours earlier.
Area forecast discussion, Jul 8, 1:51 PM MDT, 3 hours before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 250 PM CDT TUE JUL 8 1997 FORECAST PROBLEM...CHANCE OF THUNDERSTORMS AND TEMPERATURES WATER VAPOR IMAGERY INDICATING MOISTURE STREAMING NORTH INTO ROCKIES AND PLAINS AROUND BACKSIDE OF UPPER RIDGE OVER TEXAS. CU VISIBLE ON SATELLITE OVER CENTRAL NEBRASKA PANHANDLE AND NEAR KANSAS BORDER IN SOUTHWEST NEBRASKA. MAIN BOUNDARY EXTENDS FROM NORTHWEST PANHANDLE THROUGH SOUTHWEST CUSTER. KLNX RADAR RETURNS VERY LIGHT AND DECREASE AS THEY MOVE EAST. NGM/ETA FORECAST UPPER FLOW TO AMPLIFY THROUGH PERIOD WITH RIDGE OVER THE ROCKIES SHIFTING EAST INTO THE MO VALLEY. BOTH MODELS KEEP SHORTWAVES MOVING INTO FA THROUGH PERIOD. ETA MODEL FORECAST 700MB TEMPERATURES SHOWS 10 DEGREE TEMPERATURES FOR WESTERN NEBRASKA BY 00Z WEDNESDAY WITH A 10-13 DEGREE RANGE ACROSS FORECAST AREA BY END OF PERIOD. CAP MAY SUPPRESS CONVECTION OVER FA BUT THUNDERSTORMS COULD DRIFT INTO WESTERN FA BEFORE DISSIPATING. LATEST TREND IS FOR CONVECTION TO DEVELOP OVERNIGHT ACROSS NORTHCENTRAL AND ETA Q-G FORCING INDICATES THAT POSSIBILITY BOTH TONIGHT AND WEDNESDAY NIGHT... ALTHOUGH FORCING DOES NOT APPEAR AS GOOD WEDNESDAY NIGHT...PROBABLY DUE TO STRONGER CAP. NO Q-G FORCING IS INDICATED FOR FA ON THURSDAY EVEN WITH PVA PROBABLY DUE ONCE AGAIN TO STRONG CAP IN PLACE. WINDS SHOULD BE SOUTHEAST TONIGHT AT 5-10 AHEAD OF LOW PRESSURE IN EASTERN WYOMING. SOUTH WINDS SHOULD CONTINUE THROUGH REST OF PERIOD AHEAD OF LOW PRESSURE MOVING INTO EASTERN MONTANA. WEDNESDAY.........SOUTH 10-20 WEDNESDAY NIGHT...SOUTHEAST 5-15 THURSDAY..........SOUTH 15-25 MIXING ETA 700 TEMPERATURES DOWN TO THE SURFACE YIELDS WARMER TEMPERATURES THAN GUIDANCE. HOW EVER WILL GO WITH NEAR NGM GUIDANCE FOR LOWS. LBF UU 061/090 064/092 064 54322 ONL UU 061/089 064/093 065 54-22 IML UU 061/091 063/093 063 54322 VTN UU 060/091 064/094 065 54322 OGA UU 060/089 063/091 063 54322 FS
Nearby
Severe Thunderstorm Warnings in Nebraska, 1997Every severe thunderstorm warning in 1997
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.