Alert archive / Kansas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 71, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at Jul 7, 1987, 9:00 PM CDT for Ottawa County, Kansas. It was in force for 35 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 7, 1987, 9:00 PM CDT (02:00 UTC)
- Expired
- Jul 7, 1987, 9:35 PM CDT
- In force
- 35 min
- Issued by
- NWS Topeka, KS
- Area
- Whole counties
County Ottawa County, KS
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 |
|---|---|---|---|
| Jul 7, 9:30 PM CDT | Hail 1.75 | Ottawa, KS |
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
Topeka, KS (KTOP), launched 00:00Z, 2.0 hours before the alert went out and 174 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
- 3827 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 597 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 132 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 KCNK 080200 SVRCNK KSC143-080300- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CONCORDIA KS 900 PM CDT TUE JUL 7 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM CDT FOR THE FOLLOWING COUNTY OF NORTH CENTRAL KANSAS... NORTHERN OTTAWA AT 9 PM CDT RADAR SHOWED A SEVERE THUNDERSTORM 10 MILES NORTH OF MINNEAPOLIS NEAR DELPHOS. THE STORM IS MOVING VERY SLOWLY WTO THE NORTH. AT 850 PM GOLFBALL SIZE HAIL WAS REPORTED 3 MILES EAST OF DELPHOS. THIS THUNDERSTORM WILL LIKELY PRODUCE LARGE HAIL...HEAVY RAIN...DAMAGING WINDS AND DANGEROUS LIGHTNING. SEEK SHELTER FROM THIS STORM. LS
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 7, 6:39 PM CDT, 2 hours 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CONCORDIA KS 635 PM CDT TUE JUL 7 1987 ...THUNDERSTORMS DEVELOPING RAPIDLY IN NORTH CENTRAL KANSAS... AT 635 PM AN INTENSE THUNDERSTORM DEVELOPED RAPIDLY 12 MILES SOUTHEAST OF CONCORDIA NEAR MILTONVALE. THE THUNDERSTORM WAS PRODUCING VERY HEAVY RAIN POSSIBLE HAIL GUSTY WINDS AND DANGEROUS LIGHTNING. THE THUNDERSTORM SHOULD MOVE NORTH AT 5 TO 10 MPH. ANOTHER NEWLY DEVELOPED STRONG THUNDERSTORM WAS 10 MILE SOUTH OF CLAY CENTER. THE THUNDERSTORM WAS PRODUCING HEAVY RAIN GUSTY WINDS AND DANGEROUS LIGHTNING. THE THUNDERSTORM WAS MOVING NORTH AT 10 MPH. PHILLIPS
Special weather statement, Jul 7, 7:40 PM CDT, 1 hour 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TOPEKA KS 740 PM CDT TUE JUL 7 1987 ...HEAVY THUNDERSTORM IN SHAWNEE COUNTY... AT 740PM CDT A VERY STRONG THUNDERSTORM WAS IN WESTERN SHAWNEE COUNTY ABOUT 15 MILES WEST OF TOPEKA. THE STORM WAS MOVING NORTHNORTHEAST AND BETWEEN 740 AND 830PM WILL MOVE ACROSS NORTHERN AND WESTERN SHAWNEE COUNTY. VERY HEAVY RAIN...HAIL AND GUSTY WINDS TO AROUND 45 MPH ARE POSSIBLE WITH THIS STORMS. IN ADDITION A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE COUNTY TONIGHT. AKULOW
The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 7:15 PM CDT | Tornado Warning | TOP | Clay | 65 min |
| Jul 7, 7:22 PM CDT | Severe Thunderstorm Warning | TOP | Clay | 58 min |
| Jul 7, 7:50 PM CDT | Severe Thunderstorm Warning | TOP | Shawnee | 40 min |
| Jul 7, 7:56 PM CDT | Severe Thunderstorm Warning | TOP | Clay, Ottawa | 64 min |
| Jul 7, 8:21 PM CDT | Severe Thunderstorm Warning | TOP | Wabaunsee | 34 min |
| Jul 7, 9:53 PM CDT | Severe Thunderstorm Warning | TOP | Saline | 37 min |
| Jul 7, 10:06 PM CDT | Severe Thunderstorm Warning | TOP | Mitchell | 64 min |
| Jul 7, 10:50 PM CDT | Severe Thunderstorm Warning | TOP | Lincoln | 60 min |
| Jul 8, 3:40 AM CDT | Flash Flood Warning | TOP | Osborne | 2 hr |
Nearby
Severe Thunderstorm Warnings in Kansas, 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.