Alert archive / Kansas / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 9, NWS Topeka, KS
NWS Topeka, KS issued this severe thunderstorm warning at May 2, 1987, 8:33 PM CDT for Jackson County, Kansas. It was in force for 27 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
- May 2, 1987, 8:33 PM CDT (01:33 UTC)
- Expired
- May 2, 1987, 9:00 PM CDT
- In force
- 27 min
- Issued by
- NWS Topeka, KS
- Area
- Whole counties
County Jackson 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 |
|---|---|---|---|
| May 2, 8:43 PM CDT | Hail 1.25 | Jackson, 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, 1.6 hours before the alert went out and 48 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
- 2356 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 1214 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 6.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTOP 030135 SVRTOP KSC085-030200- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TOPEKA KS 833 PM CDT SAT MAY 2 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 900 PM CDT FOR THE FOLLOWING COUNTY OF NORTHEAST KANSAS... NORTHERN JACKSON AT 830 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM IN NORTHERN JACKSON COUNTY. THE STORM WAS MOVING TO THE NORTH AT 20 MILES7 AN HOUR. THIS THUNDERSTORM WILL LIKELY PRODUCE LARGE HAIL...HEAVY RAIN...DAMAGING WINDS AND DANGEROUS LIGHTNING. SEEK SHELTER FROM THIS STORM. HEATHFIELD
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, May 2, 7:52 PM CDT, 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CONCORDIA KS 751 PM CDT MAY 2 1987 A STRONG THUNDERATORM WAS 6 MILES SOUTHEAST OF CONCORDIA MOVING TO THE NORTHEAST AT 10 MILES AN HOUR. THIS THUNDERSTORM WAS PRODUCING VERY HEAVY RAIN AND SOME HAIL. THESE THUNDERSTORMS BUILD UP RAPIDILY AND PRODUCE RAIN AND SOME HAIL BEFORE DYING DOWN. STAPLETON
The office that day
Everything else NWS Topeka, KS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 4:56 PM CDT | Severe Thunderstorm Warning | TOP | Osage, Shawnee | 34 min |
| May 3, 5:27 PM CDT | Severe Thunderstorm Warning | TOP | Douglas, Osage, Shawnee | 33 min |
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.