Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 20, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jun 27, 1987, 7:55 PM MDT for Keith County, Nebraska. It was in force for 55 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
- Jun 27, 1987, 7:55 PM MDT (01:55 UTC)
- Expired
- Jun 27, 1987, 8:50 PM MDT
- In force
- 55 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
County Keith County, NE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 27, 8:05 PM MDT | Hail 1.75 | Keith, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 1.9 hours before the alert went out and 89 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
- 1847 J/kg
- Mixed-layer CIN
- -110 J/kg
- Mixed-layer LCL
- 1834 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 59 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 10.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLBF 280155 SVRLBF NEC101-280850- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 755 PM MDT SAT JUN 27 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 250 AM MDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTHWEST NEBRASKA...EASTERN AND CENTRAL AND SOUTHERN KEITH A SEVERE THUNDERSTORMS WAS 2 MILES NORTH OF KEYSTONE MOVING SOUTH AT 10 MILES AN HOUR. HAIL 3/4 TO 1 INCH IF THREATENING WEATHER APPROACHES...GET TO A REINFORCED SHELTER AND PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN... AND DANGEROUS LIGHTNING. IF THREATENING WEATHER APPROACHES...GET TO A REINFORCED SHELTER AND PREPARE FOR STRONG DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND DANGEROUS LIGHTNING. REMEMBER...THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING...SO BE ON THE LOOKOUT!! REPORTS OF SEVERE WEATHEnR OR DAMAGE CAN BE GIVEN TO A LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE.
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, Jun 27, 5:38 PM MDT, 2 hours 17 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 635 PM CDT SAT JUN 27 1987 AT 530 PM CDT A STRONG THUNDERSTORM WAS LOCATED ABOUT 5 MILES NORTH OF ASHBY JUST ENTERING NORTHWEST GRANT COUNTY OF NORTH CENTRAL NEBRASKA. THIS WOULD BE ABOUT 35 MILES EAST OF ALLIANCE. THIS THUNDERSTORM MAY PRODUCE SOME SMALL HAIL AND GUSTY WINDS IN THE AREA OF ASHBY AND HYANNIS OVER THE NEXT HOUR AS IT MOVES SOUTHEAST AT 20 MILES AN HOUR. OTHER THUNDERSTORMS WERE SCATTERED OVER KEITH COUNTY NORTH OF KEYSTONE. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 15 MILES AN HOUR. MONSON
Special weather statement, Jun 27, 5:41 PM MDT, 2 hours 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 635 PM CDT SAT JUN 27 1987 AT 530 PM MDT A STRONG THUNDERSTORM WAS LOCATED ABOUT 5 MILES NORTH OF ASHBY JUST ENTERING NORTHWEST GRANT COUNTY OF NORTH CENTRAL NEBRASKA. THIS WOULD BE ABOUT 35 MILES EAST OF ALLIANCE. THIS THUNDERSTORM MAY PRODUCE SOME SMALL HAIL AND GUSTY WINDS IN THE AREA OF ASHBY AND HYANNIS OVER THE NEXT HOUR AS IT MOVES SOUTHEAST AT 20 MILES AN HOUR. OTHER THUNDERSTORMS WERE SCATTERED OVER KEITH COUNTY NORTH OF KEYSTONE. THESE THUNDERSTORMS WERE MOVING SOUTHEAST AT 15 MILES AN HOUR. MONSON
Special weather statement, Jun 27, 6:15 PM MDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 715 PM CDT SAT JUN 27 1987 ...SEVERE THUNDERSTORM WATCH FROM 7 PM CDT UNTIL 1 PM CDT THIS SATURDAY EVENING AND SUNDAY MORNING FOR SOUTHWEST AND NORTH CENTRAL NEBRASKA... AT 710 PM CDT AN INTENSE THUNDERSTORM WAS LOCATED ABOUT 50 MILES SOUTH SOUTHWEST OF VALENTINE NEBRASKA OR ABOUT 10 MILES NORTH OF MULLEN IN HOOKER COUNTY. THIS THUNDERSTORM MAY CONTAIN LARGE HAIL ALONG WITH HEAVY RAIN AND STRONG WINDS. THIS THUNDERSTORM HAS BEEN MOVING SOUTHEAST AT 20 MILES AN HOUR AND WILL BE MOVING INTO THE COMMUNITY OF MULLEN BY 745 PM CDT. OTHER STRONG THUNDERSTORMS WERE LOCATED ACROSS ARTHUR COUNTY OF NORTH CENTRAL NEBRASKA. THESE THUNDERSTORMS WERE ALSO MOVING SOUTHEAST AT 20 MILES AN HOUR AND MAY PRODUCE SMALL HAIL. MONSON
Special weather statement, Jun 27, 6:17 PM MDT, 1 hour 38 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 715 PM CDT SAT JUN 27 1987 ...SEVERE THUNDERSTORM WATCH FROM 7 PM CDT UNTIL 1 AM CDT THIS SATURDAY EVENING AND SUNDAY MORNING FOR SOUTHWEST AND NORTH CENTRAL NEBRASKA... AT 710 PM CDT AN INTENSE THUNDERSTORM WAS LOCATED ABOUT 50 MILES SOUTH SOUTHWEST OF VALENTINE NEBRASKA OR ABOUT 10 MILES NORTH OF MULLEN IN HOOKER COUNTY. THIS THUNDERSTORM MAY CONTAIN LARGE HAIL ALONG WITH HEAVY RAIN AND STRONG WINDS. THIS THUNDERSTORM HAS BEEN MOVING SOUTHEAST AT 20 MILES AN HOUR AND WILL BE MOVING INTO THE COMMUNITY OF MULLEN BY 745 PM CDT. OTHER STRONG THUNDERSTORMS WERE LOCATED ACROSS ARTHUR COUNTY OF NORTH CENTRAL NEBRASKA. THESE THUNDERSTORMS WERE ALSO MOVING SOUTHEAST AT 20 MILES AN HOUR AND MAY PRODUCE SMALL HAIL. MONSON
Special weather statement, Jun 27, 6:46 PM MDT, 1 hour 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 745 PM CDT SAT JUN 27 1987 ...SEVERE THUNDERSTORM WATCH FROM 7 PM CDT UNTIL 1 AM CDT THIS SATURDAY EVENING AND SUNDAY MORNING FOR SOUTHWEST AND NORTH CENTRAL NEBRASKA... AT 745 PM CDT AN INTENSE THUNDERSTORM WAS LOCATED OVER NORTHERN HOOKER COUNTY NEAR MULLEN NEBRASKA. THIS THUNDERSTORMS WAS MOVING SOUTHEAST AT 20 MILES PER HOUR. ANOTHER INTENSE THUNDERSTORMS WAS OVWR ARTHU AND MCPHERSON COUNTY NEAR ARTHUR NEBRASKA. THIS THUNDERSTORM WAS MOVING EAST AT 20 MILES PER HOUR. THESE THUNDERSTORMS WILL PRODUCE BRIEF HEAVY RAIN..STRONG GUSTY SURFACE WIND AND HAIL AS THEY MOVE ACROSS THE AREA. HETZKE
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 6:52 PM MDT | Severe Thunderstorm Warning | LBF | McPherson | 68 min |
| Jun 27, 7:18 PM MDT | Severe Thunderstorm Warning | LBF | Arthur | 47 min |
| Jun 27, 7:31 PM MDT | Severe Thunderstorm Warning | LBF | Keith | 54 min |
| Jun 27, 8:08 PM MDT | Tornado Warning | LBF | Keith | 67 min |
| Jun 28, 5:54 PM MDT | Severe Thunderstorm Warning | LBF | Lincoln | 36 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.