Alert archive / Iowa / Flash Flood Warnings in 1993
Flash Flood Warning 4, NWS Des Moines, IA
NWS Des Moines, IA issued this flash flood warning at May 2, 1993, 3:39 PM CDT for Benton County, Linn County, Iowa. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- May 2, 1993, 3:39 PM CDT (20:39 UTC)
- Expired
- May 2, 1993, 7:00 PM CDT
- In force
- 3 hr
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Benton County, IA, Linn County, IA
The nearest sounding before it
Minneapolis, MN (KSTC), launched 12:00Z, 8.7 hours before the alert went out and 339 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
- 516 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 64 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 KDSM 022042 FFWDSM IAC011-113-030000- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DES MOINES IA 339 PM CDT SUN MAY 2 1993 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 700 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION(S)S... IN EAST CENTRAL IOWA ...SOUTHEASTERN BENTON COUNTY...LINN COUNTY AT 335 PM CDT A LINE OF THUNDERSTORMS WAS MOVING NORTHEAST. THESE STORMS CONTINUE TO PRODUCE BRIEF VERY HEAVY RAINS OF 1.5 TO 2.O INCHES IN LESS THAN AN HOUR PRODUCING STREET FLOODING AS WELL AS FLASH FLOODING. THIS WARNING DOES INCLUDE THE CITY OF CEDAR RAPIDS. FORSTER/BELLES A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. 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 ALONGl STREAMS OR CREEKS DURING THREATENING RAINS.
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, May 2, 11:27 AM CDT, 4 hours 12 minutes before
IAZ006>011-016>019-026>029-038>040-021825- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 1125 AM CDT SUN MAY 2 1993 ...MORE RAIN ON THE WAY AND FOR SOME OF US IT MAY BE HEAVY... A FLASH FLOOD WATCH IS IN EFFECT FOR BUCHANAN COUNTY INCLUDING THE CITY OF INDEPENDENCE. RAINSHOWERS CONTINUED TO OCCUR FROM GRUNDY CENTER NORTHEAST TO DECORAH AND WAUKON. THE PRECIPITATION HAS BEEN MAINLY LIGHT WITH SOME ISOLATED MODERATE RAINS. THROUGH 2 PM EXPECT THE LARGER CONCENTRATION OF RAIN TO OCCUR IN THOSE AREAS EAST OF HIGHWAY 63 WITH JUST WIDELY SCATTERED SHOWERS TO THE WEST. THE POTENTIAL FOR THUNDERSTORMS IS IN THE FORECAST ALONG WITH HEAVY RAINS. THE MOST FAVORABLE LOCATION FOR THIS WOULD BE IN AREAS SOUTH OF HIGHWAY 3 AND ALONG AND EAST OF HIGHWAY 150. THOSE LIVING NEAR CREEKS AND SMALL STREAMS IN BUCHANAN COUNTY SHOULD STAY ALERT SHOULD STORMS OCCUR AND CONSEQUENT RISING WATERS OVERFLOW BANKS. BE PREPARED TOf MOVE TO HIGHER GROUND SHOULD FLOODING OCCUR. COLLAR
Special weather statement, May 2, 1:15 PM CDT, 2 hours 24 minutes before
IAZ006>011-016>019-026>029-038>040-022115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 115 PM CDT SUN MAY 2 1993 ...MORE RAIN ON THE WAY AND FOR SOME OF US IT MAY BE HEAVY... A FLASH FLOOD WATCH REMAINS IN EFFECT FOR EAST CENTRAL IOWA INCLUDING BUCHANAN...CLAYTON...DELAWARE...DUBUQUE...JONES AND JACKSON COUNTIES... RAIN SHOWERS CONTINUED TO OCCUR FROM TO THE EAST OF HIGHWAY 63 AND TO THE NORTH OF HIGHWAY 20. THE HEAVIEST PRECIPITATION WAS FALLING ALONG HIGHWAY 20 NEAR THE TOWNS OF MANCHESTER AND DELAWARE. THROUGH 4 PM EXPECT LARGER CONCENTRATIONS OF RAIN TO OCCUR IN THOSE AREAS EAST OF HIGHWAY 63 WITH JUST WIDELY SCATTERED SHOWERS FALLING ELSEWHERE. THE POTENTIAL FOR THUNDERSTORMS IS IN THE FORECAST ALONG WITH HEAVY RAINS. THE MOST FAVORABLE LOCATION FOR THIS WOULD BE IN AREAS SOUTH OF HIGHWAY 3 AND ALONG AND EAST OF HIGHWAY 150. THOSE LIVING NEAR CREEKS AND SMALL STREAMS IN EAST CENTRAL IOWA SHOULD STAY ALERT SHOULD STORMS OCCUR AND CONSEQUENT RISING WATERS OVERFLOW BANKS. BE PREPARED TO MOVE TO HIGHER GROUND SHOULD FLOODING OCCUR. TRS
Special weather statement, May 2, 1:27 PM CDT, 2 hours 12 minutes before
IAZ006>011-016>019-026>029-038>040-022115- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 115 PM CDT SUN MAY 2 1993 ...MORE RAIN ON THE WAY AND FOR SOME OF US IT MAY BE HEAVY... A FLASH FLOOD WATCH REMAINS IN EFFECT FOR EAST CENTRAL IOWA INCLUDING BUCHANAN...CLAYTON...DELAWARE...DUBUQUE...JONES AND JACKSON COUNTIES... RAIN SHOWERS CONTINUED TO OCCUR FROM TO THE EAST OF HIGHWAY 63 AND TO THE NORTH OF HIGHWAY 20. THE HEAVIEST PRECIPITATION WAS FALLING ALONG HIGHWAY 20 NEAR THE TOWNS OF MANCHESTER AND DELAWARE. THROUGH 4 PM EXPECT LARGER CONCENTRATIONS OF RAIN TO OCCUR IN THOSE AREAS EAST OF HIGHWAY 63 WITH JUST WIDELY SCATTERED SHOWERS FALLING ELSEWHERE. THE POTENTIAL FOR THUNDERSTORMS IS IN THE FORECAST ALONG WITH HEAVY RAINS. THE MOST FAVORABLE LOCATION FOR THIS WOULD BE IN AREAS SOUTH OF HIGHWAY 3 AND ALONG AND EAST OF HIGHWAY 150. THOSE LIVING NEAR CREEKS AND SMALL STREAMS IN EAST CENTRAL IOWA SHOULD STApY ALERT SHOULD STORMS OCCUR AND CONSEQUENT RISING WATERS OVERFLOW BANKS. BE PREPARED TO MOVE TO HIGHER GROUND SHOULD FLOODING OCCUR. TRS
Special weather statement, May 2, 2:30 PM CDT, 1 hour 9 minutes before
IAZ006>011-016>019-026>029-038>040-022230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 230 PM CDT SUN MAY 2 1993 ...MORE RAIN ON THE WAY AND FOR SOME OF US IT MAY BE HEAVY... A FLASH FLOOD WATCH REMAINS IN EFFECT FOR EAST CENTRAL IOWA INCLUDING BUCHANAN...CLAYTON...DELAWARE...DUBUQUE...JONES AND JACKSON COUNTIES... RAIN SHOWERS CONTINUED TO OCCUR FROM TO THE EAST OF HIGHWAY 150 AND TO THE NORTH OF HIGHWAY 20. THE HEAVIEST PRECIPITATION WAS FALLING IN CLAYTON AND DELAWARE COUNTIES NEAR THE TOWNS OF GUTTENBURG...DELAWARE MANCHESTER AND RYAN. THROUGH 5 PM EXPECT LARGER CONCENTRATIONS OF RAIN TO OCCUR IN THOSE AREAS EAST OF HIGHWAY 63 WITH JUST WIDELY SCATTERED SHOWERS FALLING ELSEWHERE. THE POTENTIAL FOR THUNDERSTORMS IS IN THE FORECAST ALONG WITH HEAVY RAINS. THE MOST FAVORABLE LOCATION FOR THIS WOULD BE IN AREAS SOUTH OF HIGHWAY 3 AND ALONG AND EAST OF HIGHWAY 150. THOSE LIVING NEAR CREEKS AND SMALL STREAMS IN EAST CENTRAL IOWA SHOULD STAY ALERT AND SHOULD KEEP AN EYE ON THE WEATHER AND RIVER CONDITIONS. ALSO...CHECK EQUIPMENT AND SUPPLIES NEEDED AND PLAN WHAT TO DO IF THERE IS FLOODING. BE READY TO ACT QUICKLY IF FLOODING STARTS...OR A WARNING IS ISSUED. TRS
Special weather statement, May 2, 2:30 PM CDT, 1 hour 9 minutes before
IAZ006>011-016>019-026>030-038>042-053-054-022230- SPECIAL WEATHER STATEMENT...CORRECTION FOR DATE/TIME HEADER NATIONAL WEATHER SERVICE WATERLOO IA 230 PM CDT SUN MAY 2 1993 ...MORE RAIN ON THE WAY AND FOR SOME OF US IT MAY BE HEAVY... A FLASH FLOOD WATCH REMAINS IN EFFECT FOR EAST CENTRAL IOWA INCLUDING BUCHANAN...CLAYTON...DELAWARE...DUBUQUE...JONES AND JACKSON COUNTIES... RAIN SHOWERS CONTINUED TO OCCUR FROM TO THE EAST OF HIGHWAY 150 AND TO THE NORTH OF HIGHWAY 20. THE HEAVIEST PRECIPITATION WAS FALLING IN CLAYTON AND DELAWARE COUNTIES NEAR THE TOWNS OF GUTTENBURG...DELAWARE MANCHESTER AND RYAN. THROUGH 5 PM EXPECT LARGER CONCENTRATIONS OF RAIN TO OCCUR IN THOSE AREAS EAST OF HIGHWAY 63 WITH JUST WIDELY SCATTERED SHOWERS FALLING ELSEWHERE. THE POTENTIAL FOR THUNDERSTORMS IS IN THE FORECAST ALONG WITH HEAVY RAINS. THE MOST FAVORABLE LOCATION FOR THIS WOULD BE IN AREAS SOUTH OF HIGHWAY 3 AND ALONG AND EAST OF HIGHWAY 150. THOSE LIVING NEAR CREEKS AND SMALL STREAMS IN EAST CENTRAL IOWA SHOULD STAY ALERT AND SHOULD KEEP AN EYE ON THE WEATHER AND RIVER CONDITIONS. ALSO...CHECK EQUIPMENT AND SUPPLIES NEEDED AND PLAN WHAT TO DO IF THERE IS FLOODING. BE READY TO ACT QUICKLY IF FLOODING STARTS...OR A WARNING IS ISSUED. TRS
Special weather statement, May 2, 2:32 PM CDT, 1 hour 7 minutes before
IAZ006>011-016>019-026>030-038>042-053-054-022230- SPECIAL WEATHER STATEMENT...CORRECTION FOR DATE/TIME HEADER NATIONAL WEATHER SERVICE WATERLOO IA 230 PM CDT SUN MAY 2 1993 ...MORE RAIN ON THE WAY AND FOR SOME OF US IT MAY BE HEAVY... A FLASH FLOOD WATCH REMAINS IN EFFECT FOR EAST CENTRAL IOWA INCLUDING BUCHANAN...CLAYTON...DELAWARE...DUBUQUE...JONES AND JACKSON COUNTIES... RAIN SHOWERS CONTINUED TO OCCUR FROM TO THE EAST OF HIGHWAY 150 AND TO THE NORTH OF HIGHWAY 20. THE HEAVIEST PRECIPITATION WAS FALLING IN CLAYTON AND DELAWARE COUNTIES NEAR THE TOWNS OF GUTTENBURG...DELAWARE MANCHESTER AND RYAN. THROUGH 5 PM EXPECT LARGER CONCENTRATIONS OF RAIN TO OCCUR IN THOSE AREAS EAST OF HIGHWAY 63 WITH JUST WIDELY SCATTERED SHOWERS FALLING ELSEWHERE. THE POTENTIAL FOR THUNDERSTORMS IS IN THE FORECAST ALONG WITH HEAVY RAINS. THE MOST FAVORABLE LOCATION FOR THIS WOULD BE IN AREAS SOUTH OF HIGHWAY 3 AND ALONG AND EAST OF HIGHWAY 150. THOSE LIVING NEAR CREEKS AND SMALL STREAMS IN EAST CENTRAL IOWA SHOULD STAY ALERT AND SHOULD KEEP AN EYE ON THE WEATHER AND RIVER CONDITIONS. ALSO...CHECK EQUIPMENT AND SUPPLIES NEEDED AND PLAN WHAT TO DO IF THERE IS FLOODING. BE READY TO ACT QUICKLY IF FLOODING STARTS...OR A WARNING IS ISSUED. TRS
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 2:42 PM CDT | Flash Flood Warning | DMX | Keokuk, Wapello | 3 hr |
| May 2, 2:42 PM CDT | Flash Flood Warning | DMX | Jones | 3 hr |
| May 2, 5:01 PM CDT | Flash Flood Warning | DMX | Appanoose | 2 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.