Alert archive / Missouri / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 64, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 20, 1987, 9:47 PM CDT for Pike County, Missouri. It was in force for 33 min. 2 reports 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
- Aug 20, 1987, 9:47 PM CDT (02:47 UTC)
- Expired
- Aug 20, 1987, 10:20 PM CDT
- In force
- 33 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Pike County, MO
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 |
|---|---|---|---|
| Aug 20, 9:57 PM CDT | Thunderstorm Wind 0 | Pike, MO | |
| Aug 20, 10:00 PM CDT | Thunderstorm Wind 52 | Pike, MO |
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
Peoria Regional, IL (KPIA), launched 00:00Z, 2.8 hours before the alert went out and 199 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
- 1095 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1543 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 6.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSTL 210245 SVRSTL MOC113-163-210330- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 947 PM CDT THU AUG 20 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1030 PM CDT FOR THE FOLLOWING COUNTIES OF EAST CENTRAL MISSOURI... LINCOLN NORTHEAST MISSOURI... SOUTHERN PIKE RADAR INDICATED AN INTENSE THUNDERSTORM NEAR BOWLING GREEN MISSOURI... 50 MILES NORTHWEST OF ST LOUIS. THIS STORM WAS MOVING TO THE SOUTHEAST AT 35 MPH. WIND GUSTS GO 60 MPH WERE REPORTED WITH THIS STORM. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. REPORT SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY OR THE NATIONAL WEATHER SERVICE. SLAUGHTER
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, Aug 20, 8:11 PM CDT, 1 hour 36 minutes before
SPECIAL WEATHER STATEMENT FOR NORTHEAST MISSOURI NATIONAL WEATHER SERVICE ST LOUIS MO 805 PM CDT THU AUG 20 1987 NUMEROUS TREES AND POWER LINES WERE REPORTED DOWN IN ADAIR...MOSTLY IN THE KIRKSVILLE AREAA. TRAVEL IN ADAIR COUNTY IS DANGEROUS AT THE PRESENT TIME. SOME BRIDGES WERE REPORTED UNDER WATER FROM FLASH FLOODING FROM THEST STORMS. THE FLASH FLOODING WILL REMAIN A THREAT UNTIL ABOUT 10 PM THIS EVENING.
Special weather statement, Aug 20, 8:32 PM CDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT FOR EAST CENTRAL MISSOURI NATIONAL WEATHER SERVICE ST LOUIS MO 830 PM CDT THU AUG 20 1987 AT 830 PM VERY INTENSE THUNDERSTORMS WERE MOVING INTO NORTHERN RALLS AND NORTHERN MONROKE COUNTY. THESE STORMS ARE EXPECTED VERY HEAVY RAIN.. DANGEROUS LIGHTNING..STRONG GUSTY WINDS AND HAIL. THE STORMS WERE MOVING TO THE SOUTHEAST AT 30 MPH AND SHOULD MOVE THROUGH RALLS AND MONROE COUNTIES BY 915 PM THIS EVENING. SLAUGHTER
Special weather statement, Aug 20, 8:34 PM CDT, 1 hour 13 minutes before
SPECIAL WEATHER STATEMENT FOR EAST CENTRAL MISSOURI NATIONAL WEATHER SERVICE ST LOUIS MO 830 PM CDT THU AUG 20 1987 AT 830 PM VERY INTENSE THUNDERSTORMS WERE MOVING INTO NORTHERN RALLS AND NORTHERN MONROE COUNTY. THESE STORMS ARE EXPECTED TO PRODUCE VERY HEAVY RAIN..DANGEROUS LIGHTNING..STRONG GUSTY WINDS AND HAIL. THE STORMS WERE MOVING TO THE SOUTHEAST AT 30 MPH AND SHOULD MOVE THROUGH RALLS AND MONROE COUNTIES BY 915 PM THIS EVENING. SLAXUGHTER
Special weather statement, Aug 20, 8:45 PM CDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE ST LOUIS MO 841 PM CDT THU AUG 20 1987 AT 830 PM CDT...NUMEROUS SHOQERS AND STRONG THUNDERSTORMS...SOME WITH HEAVY RAIN AND HAIL CONTINUED BETWEEN SHELBINA MISSOURI AND QUINCY ILLINOIS...SCATTERED RAINSHOWERS CONTINUED OVER PORTIONS OF WEST ILLINOIS. THIS ENTIRE AREA OF SHOWERS AND STORMS EXTENDED FROM SHELBINA MISSOURI TO 10 MILES SOUTHWEST OF PEORIA ILLINOIS. iTHE HEAVIEST RAINFALL...POSSIBLE HAIL AND STRONG WINDS WERE LOCATED 15 MILES SOUTHWEST OF QUINCY ILLINOIS AND 5 MILES EAST OF SHELBINA MISSOURI. MOVEMENT OF THE SHOWERS AND STORMS WAS SOUTHEAST AT 35 MILES AN HOUR. DYE
Special weather statement, Aug 20, 9:06 PM CDT, 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 900 PM CDT THU AUG 20 1987 AT 900 PM CDT WEATHER SERVICE RADARS INDICATED A LINE IF INTENSE THUNDERSTORMS EXTENDING FROM JUST SOUTH OF HANNIBAL MISSOURI TO JUST NORTHEAST OF MEXICO MISSOURI. THESE THUNDERSTORMS WERE MOVING TO THE SOUTHEAST AT 25 TO 30 MPH. THE STORMS WILL MOVE THROUGH SOUTHEAST RALLS COUNTY...PIKE COUNTY AND EASTERN AUDRAIN COUNTIES IN EAST CENTRAL MISSOURI. THESE wSTORMS WILL PRODUCE VERY HEAVY RAIN...INTENSE LIGHTNING ...HAIL AND STRONG GUSTY WINDS UNTIL 10 PM THIS EVENING.
Special weather statement, Aug 20, 9:27 PM CDT, 20 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 925 PM CDT THU AUG 21 1987 ...INTENSE THUNDERSTORMS CONTINUE TO MOVE THROUGH NORTHEAST MISSOURI... AT 925 PM A LINE OF INTENSE THUNDERSTORMS FROM HANNIBAL TO VANDALIA MISSOURI CONTINUED TO MOVE SOUTHEAST AT 35 MPH. THESE STORMS WILL MOVE THROUGH NEW LONDON..LOUISIANA AND BOWLING GREEN MISSOURI BETWEEN 930 AND 1030 PM AND RESIDENTS SHOULD EXPECT VERY HEAVY RAIN STRONG GUSTY WINDS AND SOME HAIL. PERSONS IN RALLS AND PIKE COUNTIES IN MISSOURI AND IN PIKE AND NORTHERN CALHOUN COUNTIES IN ILLINOIS SHOULD STAY INSIDE OR FIND SAFE SHELTER UNTIL THESE STORMS PASS. HAMILTON
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 7:26 PM CDT | Severe Thunderstorm Warning | LSX | Adair, Knox, Lewis | 49 min |
| Aug 20, 7:52 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Shelby | 38 min |
| Aug 20, 8:11 PM CDT | Tornado Warning | LSX | Marion | 19 min |
| Aug 20, 9:47 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 43 min |
| Aug 20, 10:25 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 35 min |
Nearby
Severe Thunderstorm Warnings in Missouri, 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.