Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 51, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 10, 1987, 8:22 PM CDT for Keya Paha County, Nebraska. It was in force for 68 min.
The area
The counties it named.
The facts
- Issued
- Jul 10, 1987, 8:22 PM CDT (01:22 UTC)
- Expired
- Jul 10, 1987, 9:30 PM CDT
- In force
- 68 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Keya Paha County, NE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.4 hours before the alert went out and 208 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
- 3373 J/kg
- Mixed-layer CIN
- -98 J/kg
- Mixed-layer LCL
- 1858 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 56 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 6.4
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Jul 10, 5:28 PM CDT, 2 hours 54 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 425 PM MDT FRI JUL 10 1987 STRONG THUNDERSTORMS WERE DEVELOPING IN SOUTHWEST NEBRASKA THIS AFTERNOON. AT 420 PM MDT STRONG THUNDERSTORMS HAD JUST DEVELOPED IN SOUTH CENTRAL KEITH COUNTY OF SOUTHWEST NEBRASKA. THE STRONG THUNDERSTORMS WERE 7 MILES SOUTHEAST OF OGALLALA NEBRASKA WHICH IS IN CENTRAL KEITH COUNTY. NO THUNDERSTORM MOVEMENT HAD YET BEEN DETERMINED DUE TO BEING NEWLY DEVELOPED. LISTEN FOR LATER STATEMENTS WHEN EXACT MOVEMENT HAS BEEN DETERMINED. PERSONS IN SOUTHWEST KEITH COUNTY CAN ALREADY LOOK FOR DANGEROUS LIGHTNING...HEAVY RAINS AND BRIEF GUSTY WINDS AS THESE THUNDERSTORMS CONTINUE TO DEVELOP DURING THE AFTERNOON HOURS. MEYER
Special weather statement, Jul 10, 6:29 PM CDT, 1 hour 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 625 PM CDT FRI JUL 10 1987 STRONG THUNDERSTORMS CONTINUED ACROSS SOUTHWEST NEBRASKA THIS AFTERNOON. AT 620 PM CDT A STRONG THUNDERSTORM WAS IN EXTREME NORTHWEST LINCOLN COUNTY OF SOUTHWEST NEBRASKA. THE STRONG THUNDERSTORM WAS 25 MILES NORTHWEST OF NORTH PLATTE NEBRASKA MOVING NORTHEAST AT 20 MILES AN HOUR. OTHER WEAKER THUNDERSTORMS WERE SCATTERED BETWEEN OGALLALA AND PAXTON IN KEITH COUNTY ALSO IN SOUTHWEST NEBRASKA. THESE WEAKER THUNDERSTORMS WERE ALSO MOVING NORTHEAST AT 20 MILES AN HOUR. ANOTHER STRONG THUNDERSTORM HAD DEVELOPED IN NORTHWEST RED-WILLOW COUNTY IN SOUTHWEST NEBRASKA. THIS STRONG THUNDERSTORM WAS 7 MILES NORTHWEST OF MCCOOK NEBRASKA ALSO MOVING NORTHEAST AT 20 MILES AN HOUR. PEOPLE IN PARTS OF SOUTHWEST NEBRASKA CAN EXPECT DANGEROUS LIGHTNING...SMALL HAIL...LOCALLY HEAVY RAIN AND BRIEF GUSTY WINDS AS THESE THUNDERSTORMS MOVE ACROSS THE REGION DURING THE AFTERNOON AND EVENING HOURS. MEYER
Special weather statement, Jul 10, 7:30 PM CDT, 52 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 730 PM CDT FRI JUL 10 1987 THUNDERSTORMS HAD LOST STRENGTH ACROSS PARTS OF SOUTHWEST NEBRASKA THIS EVENING. AT 725 PM CDT A STRONG THUNDERSTORM WAS IN SOUTH CENTRAL FRONTIER COUNTY OF SOUTHWEST NEBRASKA BUT HAD LOST STRENGTH DURING THE PAST HOUR. THE THUNDERSTORM IN FRONTIER COUNTY WAS 10 MILES SOUTHEAST OF CURTIS NEBRASKA OR 15 MILES NORTHEAST OF MCCOOK NEBRASKA MOVING NORTHEAST AT 15 MILES AN HOUR. THE STRONG THUNDERSTORM IN NORTHWEST LINCOLN COUNTY HAD DISSAPATED AND IN ITS PLACE WAS ONLY RAINSHOWERS. PEOPLE IN CENTRAL FRONTIER COUNTY SHOULD REMAIN ALERT TO DANGEROUS LIGHTNING...LOCALLY HEAVY RAIN AND BRIEF GUSTY WIND AS THE STRONG THUNDERSTORM MOVES THROUGH THAT COUNTY DURING THE EVENING HOURS. MEYER
Special weather statement, Jul 10, 8:11 PM CDT, 11 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 810 PM CDT FRI JUL 10 1987 THUNDERSTORMS CONTINUED TO DISSAPATE ACROSS SOUTHWEST NEBRASKA THIS EVENING. AT 810 PM CDT ALL THE STRONG THUNDERSTORMS THAT WERE IN FRONTIER AND KEITH COUNTIES OF SOUTHWEST NEBRASKA HAD DISSAPATED. THERE IS STILL A CHANCE OF SCATTERED THUNDERSTORMS ACROSS SOUTHWEAST NEBRASKA TONIGHT BUT THEY ARE NO LONGER EXPECTED TO REACH LIMITS WHERE THEY PRODUCE LARGE HAIL AND DAMAGING WINDS. THIS WILL PROBABLY BE THE LAST SPECIAL WEATHER STATEMENT ISSUED BY THE NORTH PLATTE NATIONAL WEATHER SERVICE UNLESS STORMS WOULD REDEVELOP OR MOVE INTO SOUTHWEST NEBRASKA ONCE AGAIN. MEYER
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 7:08 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 52 min |
| Jul 10, 10:33 PM CDT | Severe Thunderstorm Warning | LBF | Grant | 57 min |
| Jul 10, 11:13 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 57 min |
| Jul 10, 11:44 PM CDT | Severe Thunderstorm Warning | LBF | Hooker | 21 min |
| Jul 10, 11:44 PM CDT | Severe Thunderstorm Warning | LBF | Thomas | 46 min |
| Jul 11, 1:10 AM CDT | Tornado Warning | LBF | Brown, Rock | 35 min |
| Jul 11, 1:34 AM CDT | Severe Thunderstorm Warning | LBF | Holt | 56 min |
| Jul 11, 2:14 AM CDT | Severe Thunderstorm Warning | LBF | Boyd | 31 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1987Every severe thunderstorm warning in 1987
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.