Alert archive / Iowa / Flash Flood Warnings in 1993
Flash Flood Warning 5, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Jun 29, 1993, 7:47 PM CDT for Clayton County, Iowa. It was in force for 12 hr.
The area
The counties it named.
The facts
- Issued
- Jun 29, 1993, 7:47 PM CDT (00:47 UTC)
- Expired
- Jun 30, 1993, 7:45 AM CDT
- In force
- 12 hr
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Clayton County, IA
The nearest sounding before it
Minneapolis, MN (KSTC), launched 00:00Z, 0.8 hours before the alert went out and 287 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 679 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 177 m²/s²
- 0-3 km storm-relative helicity
- 311 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 KDBQ 300047 FFWDBQ IAC043-301245- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DUBUQUE IA 747 PM CDT TUE JUN 29 1993 THE NATIONAL WEATHER SERVICE IN DUBUQUE HAS ISSUED A FLASH FLOOD WARNING...FOR POSSIBLE DIKE FAILURE... EFFECTIVE UNTIL 745 AM CDT JUNE 30 1993 FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHEAST IOWA ...CLAYTON COUNTY ...AT 745 PM CDT SHOWERS AND THUNDERSTORMS WERE MOVING INTO MARQUETTE IN CLAYTON COUNTY...45 MILES NORTHWEST OF DUBUQUE. THESE THUNDERSTORMS WILL INCREASE THE RISK OF DIKE FAILURE NEAR BLOODY RUN CREEK WHICH SURROUNDS THE TOWN OF MARQUETTE. THE DIKE IS ALREADY CRACKED AND LEAKING...ADDITIONAL RAINFALL WILL WEAKEN THE DIKE AN LEAD TO DIKE FAILURE. IF YOU ARE IN THE TOWN OF MARQUETTE YOU SHOULD PREPARE FOR THE POSSIBILITY OF RAPIDLY RISING FLOODWATERS. IF YOU LIVE IN THE AREA PROTECTED BY THE DIKE...YOU SHOULD MOVE TO HIGHER GROUND TONIGHT BEFORE HEAVY RAINS INCREASE THE DANGER. 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 DURrING THREATENING RAINS. HOOPER & NNNN
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 29, 6:32 PM CDT, 1 hour 15 minutes before
IAZ030-041-042-053-054-ILZ001-WIZ018-300030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 632 PM CDT TUE JUN 29 1993 ...A TORNADO WATCH IS IN EFFECT FOR CLAYTON AND DELAWARE COUNTIES UNTIL 1100 PM... ...A FLASH FLOOD WATCH IS IN EFFECT FOR TONIGHT FOR CLAYTON COUNTY... AT 625 PM RADAR INDICATED NO THUNDERSTORMS OR SHOWERS IN THE TRI-STATES. TO THE WEST OF THE TRI-STATES JUST TO THE WEST OF WATERLOO AND NEAR CEDAR FALLS THERE WAS A SCATTERED AREA OF SHOWERS AND THUNDERSTORMS. ALL THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. A TORNADO WATCH IS IN EFFECT UNTIL 1100 PM FOR BOTH CLAYTON AND DELAWARE COUNTIES. A FLASH FLOOD WATCH IS IN EFFE~CT FOR CLAYTON COUNTY FOR TONIGHT. PERSONS IN THE WATCH AREAS SHOULD KEEP ABREAST OF THE CHANGING WEATHER CONDITIONS AND PLAN NOW WHAT YOU WILL DO SHOULD DANGEROUS WEATHER CONDITIONS DEVELOP. ROWLAND NNNN
Special weather statement, Jun 29, 6:32 PM CDT, 1 hour 15 minutes before
IAZ030-041-042-053-054-ILZ001-WIZ018-300030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DUBUQUE IA 632 PM CDT TUE JUN 29 1993 ...A TORNADO WATCH IS IN EFFECT FOR CLAYTON AND DELAWARE COUNTIES UNTIL 1100 PM... ...A FLASH FLOOD WATCH IS IN EFFECT FOR TONIGHT FOR CLAYTON COUNTY... AT 625 PM RADAR INDICATED NO THUNDERSTORMS OR SHOWERS IN THE TRI-STATES. TO THE WEST OF THE TRI-STATES JUST TO THE WEST OF WATERLOO AND NEAR CEDAR FALLS THERE WAS A SCATTERED AREA OF SHOWERS AND THUNDERSTORMS. ALL THE SHOWERS AND THUNDERSTORMS WERE MOVING EAST AT 30 MILES AN HOUR. A TORNADO WATCH IS IN EFFECT UNTIL 1100 PM FOR BOTH CLAYTON AND DELAWARE COUNTIES. A FLASH FLOOD WATCH IS IN EFFECT FOR CLAYTON COUNTY FOR TONIGHT. PERSONS IN THE WATCH AREAS SHOULD KEEP ABREAST OF THE CHANGING WEATHER CONDITIONS AND PLAN NOW WHAT YOU WILL DO SHOULD DANGEROUS WEATHER CONDITIONS DEVELOP. ROWLAND NNNN
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 8:59 PM CDT | Severe Thunderstorm Warning | DVN | Clayton | 31 min |
| Jun 29, 9:51 PM CDT | Severe Thunderstorm Warning | DVN | Clayton, Delaware | 54 min |
| Jun 29, 10:06 PM CDT | Severe Thunderstorm Warning | DVN | Jones | 54 min |
| Jun 29, 10:23 PM CDT | Severe Thunderstorm Warning | DVN | Dubuque | 37 min |
| Jun 29, 10:47 PM CDT | Severe Thunderstorm Warning | DVN | Cedar | 43 min |
| Jun 29, 10:52 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 68 min |
| Jun 29, 11:03 PM CDT | Flash Flood Warning | DVN | Jones | 115 min |
| Jun 29, 11:11 PM CDT | Severe Thunderstorm Warning | DVN | Muscatine, Scott | 49 min |
| Jun 29, 11:11 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 49 min |
| Jun 29, 11:36 PM CDT | Flash Flood Warning | DVN | Jackson | 82 min |
| Jun 29, 11:48 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 57 min |
| Jun 29, 11:54 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 51 min |
| Jun 30, 12:04 AM CDT | Severe Thunderstorm Warning | DVN | Jones | 26 min |
| Jun 30, 12:06 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines, Lee | 54 min |
| Jun 30, 1:35 AM CDT | Flash Flood Warning | DVN | Scott | 3 hr |
| Jun 30, 7:44 AM CDT | Flash Flood Warning | DVN | Clayton | 3 hr |
| Jun 30, 6:25 PM CDT | Flash Flood Warning | DVN | Clayton | 14 hr |
Nearby
Flash Flood Warnings in Iowa, 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.