Alert archive / Missouri / Flash Flood Warnings in 1993
Flash Flood Warning 20, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jun 30, 1993, 9:07 PM CDT for Knox County, Missouri. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jun 30, 1993, 9:07 PM CDT (02:07 UTC)
- Expired
- Jul 1, 1993, 12:15 AM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
County Knox County, MO
The radar
The St Louis radar (KLSX), 203 km from the middle of the area, began a volume at 02:09 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 2.1 hours before the alert went out and 325 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
- 3169 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 128 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 KSTL 010209 FFWSTL MOC103-010515- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE ST LOUIS MO 907 PM CDT WED JUN 30 1993 THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 1215 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST MISSOURI ...KNOX COUNTY AT 905 PM...NWS DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM PRODUCING LARGE HAIL AND TORRENTIAL RAINFALL FROM HURDLAND TO EDINA...OR 15 TO 20 MILES EAST OF KIRKSVILLE. THIS STORM WAS MOVING SLOWLY TO THE EAST AT 10 TO 15 MPH AND MAY PRODUCE FLOODING IN ITS PATH. AT 902 PM...THE HURDLAND FIRE DERT REPORTED A FOOT OF WATER IN CITY STREETS. RADAR INDICATES UP TO 3 INCHES OF RAINFALL SINCE 830 PM ACROSS PORTIONS OF WESTERN KNOX COUNTY. THE SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT'S IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID CAMPING ALONG STREAMS OR CREEKS DURING THREATENING RAINS. GLASS &
What forecasters said that day
The local office's own words before this flash flood 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 30, 6:00 PM CDT, 3 hours 7 minutes before
MOZ003-006-007-011-012-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 600 PM CDT WED JUN 30 1993 ...A TORNADO WATCH REMAINS IN EFFECT FOR WEST CENTRAL MISSOURI UNTIL 8 PM CDT... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHERN AND EAST CENTRAL MISSOURI UNTIL 10 PM CDT... A CLUSTER OF STORNG THUNDERSTORMS WAS OVER EAST CENTRAL MISSOURI... JUST NORTH OF THE ST LOUIS METRO AREA AT 6 PM. OTHER STRONG STORMS WERE OCCURING OVER NORTHWEST MISSOURI...NORTH OF ST JOSEPH AND EXTENDED INTO SOUTHWEST IOWA. THUNDERSTORMS WILL CONTINUE OVER NORTHERN MISSOURI THROUGH THE EVENING HOURS. THE ATMOSPHERE IS VERY UNSTABLE OVER NORTHERN MISSOURI...SO SOME OF THESE STORMS WILL BE SEVERE...PRODUCING DAMAGING WIND...HAIL... AND TORRENTIAL RAINS. ALSO...SEVERE THUNDERSTORMS ARE CAPABLE OF POSSIBLE OF SPAWNING TORNADOES. IN ADDITION TO THE SEVERE WEATHER THREAT...THE HEAVY RAIN FALL FROM THESE STORMS MAY CAUSE FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHERN MISSOURI FOR TONIGHT. PEOPLE ACROSS THE NORTHERN HALF OF THE STATE SHOULD CONTINUE TO MONITOR THE WEATHER SITUATION CLOSELY TONIGHT. BE READY TO MOVE TO A SAFE PLACE IF SEVERE WEATHER THREATENS YOUR AREA. FERRY
Special weather statement, Jun 30, 6:19 PM CDT, 2 hours 48 minutes before
MOZ003-006-007-011-012-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 600 PM CDT WED JUN 30 1993 ...A TORNADO WATCH REMAINS IN EFFECT FOR WEST CENTRAL MISSOURI UNTIL 8 PM CDT... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHERN AND EAST CENTRAL MISSOURI UNTIL 10 PM CDT... A CLUSTER OF STORNG THUNDERSTORMS WAS OVER EAST CENTRAL MISSOURI... JUST NORTH OF THE ST LOUIS METRO AREA AT 6 PM. OTHER STRONG STORMS WERE OCCURING OVER NORTHWEST MISSOURI...NORTH OF ST JOSEPH AND EXTENDED INTO SOUTHWEST IOWA. THUNDERSTORMS WILL CONTINUE OVER NORTHERN MISSOURI THROUGH THE EVENING HOURS. THE ATMOSPHERE IS VERY UNSTABLE OVER NORTHERN MISSOURI...SO SOME OF THESE STORMS WILL BE SEVERE...PRODUCING DAMAGING WIND...HAIL... AND TORRENTIAL RAINS. ALSO...SEVERE THUNDERSTORMS ARE CAPABLE OF POSSIBLE OF SPAWNING TORNADOES. IN ADDITION TO THE SEVERE WEATHER THREAT...THE HEAVY RAIN FALL FROM THESE STORMS MAY CAUSE FLASH FLOODING. A FLASH FLOOD WATCH IS IN EFFECT FOR NORTHERN MISSOURI FOR TONIGHT. PEOPLE ACROSS THE NORTHERN HALF OF THE STATE SHOULD CONTINUE TO MONITOR THE WEATHER SITUATION CLOSELY TONIGHT. BE READY TO MOVE TO A SAFE PLACE IF SEVERE WEATHER THREATENS YOUR AREA. FERRY
Special weather statement, Jun 30, 6:45 PM CDT, 2 hours 22 minutes before
MOZ001-002-004-005-008-009-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 645 PM CDT WED JUN 30 1993 ...A TORNADO WATCH HAS BEEN ISSUED FOR WEST CENTRAL AND NORTHWEST MISSOUR EFFECTIVE UNTIL MIDNIGHT... THE NATIONAL WEATHER SEVICE HAS ISSUED A TORNADO WATCH FOR WEST CENTRAL AND NORTHWEST MISSOURI UNTIL MIDNIGHT. THIS WATCH REPLACES TORNADO WATCH 551 THAT COVERED WEST CENTRAL MISSOURI. ALSO THIS TORNADO WATCH RELPACES THAT PART OF SEVERE THUNDERSTORM WATCH 554 THAT COVERED NORTHWEST MISSOURI. SOME OF THE CITIES IN THIS TORNADO WATCH ARE ST JOSEPH...KANSAS CITY... CHILLICOTHE...MARYVILLE AND SEDALIA. STRONG THUNDERSTORMS WERE OCCURRING OVER NORTHWEST MISSOURI AND SOUTHWEST IOWA. THUNDERSTORMS WERE ALSO DEVELOPING OVER NORTHEAST KANSAS. STRONG THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHWEST THE REST OF THIS EVENING. SOME OF THESE STORMS WILL BE SEVERE AND MAY PRODUCE TORNADOES. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR THE NORTHERN HALF OF MISSOURI. PEOPLE IN NORTHWEST MISSOURI SHOULD CONTINUE TO MONITOR THE LOCAL WEATHER CONDITIONS CLOSELY TONIGHT. BE READY TO MOVE TO A SAFE PLACE IF SEVERE WEATHER DEVELOPS IN YOUR AREA. FERRY
Special weather statement, Jun 30, 6:46 PM CDT, 2 hours 21 minutes before
MOZ001-002-004-005-008-009-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ST LOUIS MO 645 PM CDT WED JUN 30 1993 ...A TORNADO WATCH HAS BEEN ISSUED FOR WEST CENTRAL AND NORTHWEST MISSOUR EFFECTIVE UNTIL MIDNIGHT... THE NATIONAL WEATHER SEVICE HAS ISSUED A TORNADO WATCH FOR WEST CENTRAL AND NORTHWEST MISSOURI UNTIL MIDNIGHT. THIS WATCH REPLACES TORNADO WATCH 551 THAT COVERED WEST CENTRAL MISSOURI. ALSO THIS TORNADO WATCH RELPACES THAT PART OF SEVERE THUNDERSTORM WATCH 554 THAT COVERED NORTHWEST MISSOURI. SOME OF THE CITIES IN THIS TORNADO WATCH ARE ST JOSEPH...KANSAS CITY... CHILLICOTHE...MARYVILLE AND SEDALIA. STRONG THUNDERSTORMS WERE OCCURRING OVER NORTHWEST MISSOURI AND SOUTHWEST IOWA. THUNDERSTORMS WERE ALSO DEVELOPING OVER NORTHEAST KANSAS. STRONG THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS NORTHWEST THE REST OF THIS EVENING. SOME OF THESE STORMS WILL BE SEVERE AND MAY PRODUCE TORNADOES. A FLASH FLOOD WATCH IS ALSO IN EFFECT FOR THE NORTHERN HALF OF MISSOURI. PEOPLE IN NORTHWEST MISSOURI SHOULD CONTINUE TO MONITOR THE LOCAL WEATHER CONDITIONS CLOSELY TONIGHT. BE READY TO MOVE TO A SAFE PLACE IF SEVERE WEATHER DEVELOPS IN YOUR AREA. FERRY
Special weather statement, Jun 30, 7:10 PM CDT, 1 hour 57 minutes before
MOZ006-009-010-011-013-014-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 710 PM CDT WED JUN 30 1993 ...STRONG THUNDERSTORMS WERE DEVELOPING OVER NORTH CENTRAL MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF CENTRAL MISSOURI UNTIL 10 PM... AT 710 PM...A BROAD BAND OF QUICKLY DEVELOPING THUNDERSTORMS EXTENDED FROM 30 MILES WEST OF KIRKSVILLE...TO 20 MILES EAST OF ST LOUIS. THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER THUS FAR...BUT THESE STORMS WERE DEVELOPING VERY FAST AND WILL INTENSIFY OVER THE NEXT FEW HOURS. THE STORMS WERE MOVING EAST AT 25 MPH. LARGE HAIL...DAMAGING WINDS...BRIEF HEAVY RAINS...AND DANGEROUS LIGHTNING CAN BE EXPECTED WITH SOME OF THESE STORMS AS THEY MOVE ACROSS CENTRAL MISSOURI THIS EVENING. STAY TUNED TO WEATHER RADIO FOR FURTHER UPDATES OR POSSIBLE WARNINGS. REPORT SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER SERVICE. . PERLOW
Special weather statement, Jun 30, 7:16 PM CDT, 1 hour 51 minutes before
MOZ006-009-010-011-013-014-010100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBIA MO 710 PM CDT WED JUN 30 1993 ...STRONG THUNDERSTORMS WERE DEVELOPING OVER NORTH CENTRAL MISSOURI... ...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR MOST OF CENTRAL MISSOURI UNTIL 10 PM... AT 710 PM...A BROAD BAND OF QUICKLY DEVELOPING THUNDERSTORMS EXTENDED FROM 30 MILES WEST OF KIRKSVILLE...TO 20 MILES EAST OF ST LOUIS. THERE HAVE BEEN NO REPORTS OF SEVERE WEATHER THUS FAR...BUT THESE STORMS WERE DEVELOPING VERY FAST AND WILL INTENSIFY OVER THE NEXT FEW HOURS. THE STORMS WERE MOVING EAST AT 25 MPH. LARGE HAIL...DAMAGING WINDS...BRIEF HEAVY RAINS...AND DANGEROUS LIGHTNING CAN BE EXPECTED WITH SOME OF THESE STORMS AS THEY MOVE ACROSS CENTRAL MISSOURI THIS EVENING. STAY TUNED TO WEATHER RADIO FOR FURTHER UPDATES OR POSSIBLE WARNINGS. REPORT SEVERE WEATHER TO YOUR NEAREST LAW ENFORCEMENT AGENCY FOR RELAY TO THE NATIONAL WEATHER S$ERVICE. . PERLOW
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 7:20 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles | 34 min |
| Jun 30, 7:36 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 35 min |
| Jun 30, 7:46 PM CDT | Severe Thunderstorm Warning | LSX | Adair | 44 min |
| Jun 30, 8:17 PM CDT | Tornado Warning | LSX | Adair | 58 min |
| Jun 30, 8:27 PM CDT | Severe Thunderstorm Warning | LSX | Shelby | 63 min |
| Jun 30, 8:37 PM CDT | Severe Thunderstorm Warning | LSX | Knox | 68 min |
| Jun 30, 9:18 PM CDT | Severe Thunderstorm Warning | LSX | Adair | 57 min |
| Jun 30, 9:34 PM CDT | Flash Flood Warning | LSX | Shelby | 3 hr |
| Jun 30, 9:34 PM CDT | Severe Thunderstorm Warning | LSX | Shelby | 56 min |
| Jun 30, 10:00 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 60 min |
| Jun 30, 10:10 PM CDT | Tornado Warning | LSX | Marion, Ralls | 65 min |
| Jun 30, 10:39 PM CDT | Flash Flood Warning | LSX | Adair | 3 hr |
| Jun 30, 11:15 PM CDT | Severe Thunderstorm Warning | LSX | Marion | 32 min |
Nearby
Flash Flood Warnings in Missouri, 1993Every flash flood warning in 1993
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; radar from the NEXRAD Level II archive.