Alert archive / Iowa / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 55, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 13, 1993, 6:49 PM CDT for Floyd County, Mitchell County, Iowa. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Jun 13, 1993, 6:49 PM CDT (23:49 UTC)
- Expired
- Jun 13, 1993, 7:30 PM CDT
- In force
- 41 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
Counties Floyd County, IA, Mitchell County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 11.8 hours before the alert went out and 362 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
- 1167 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- -246 m²/s²
- 0-3 km storm-relative helicity
- -120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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, Jun 13, 5:28 PM CDT, 1 hour 21 minutes before
IAZ059-072-074-049-060-048-073-132330- SPECIAL WEATHER STATEMENT...CORRECTED... NATIONAL WEATHER SERVICE DES MOINES IA 528 PM CDT SUN JUN 13 1993 ...TORNADO WATCH REMAINS IN EFFECT FOR SOUTH CENTRAL AND SOUTHWEST IOWA UNTIL 10 PM TONIGHT... AS OF 520 PM CDT RADAR INDICATED A LINE OF STRONG THUNDERSTORMS FROM JUST SOUTHWEST OF DES MOINES INTO THE SOUTHWEST CORNER OF IOWA. THIS LINE OF THUNDERSTORMS IS EXPECTED TO ENTER THE DES MOINES METRO AREA BETWEEN 530 PM AND 545 PM. VERY HEAVY RAIN...STRONG WINDS...LARGE HAIL AND FREQUENT LIGHTNING WILL ACCOMPANY THESE STORMS. THIS IS A VERY DANGEROUS SITUATION...A TORNADO WATCH REMAINS IN EFFECT FOR THE DES MOINES METRO AREA UNTIL 10 PM TONIGHT. STAY TUNED TO NOAA WEATHER RADIO...AND LOCAL MEDIA SOURCES FOR WARNINGS AS THEY ARE ISSUED. LEWIS
Special weather statement, Jun 13, 5:30 PM CDT, 1 hour 19 minutes before
IAZ059-072-074-049-060-048-073-132330- SPECIAL WEATHER STATEMENT...CORRECTED... NATIONAL WEATHER SERVICE DES MOINES IA 528 PM CDT SUN JUN 13 1993 ...TORNADO WATCH REMAINS IN EFFECT FOR SOUTH CENTRAL AND SOUTHWEST IOWA UNTIL 10 PM TONIGHT... AS OF 520 PM CDT RADAR INDICATED A LINE OF STRONG THUNDERSTORMS FROM JUST SOUTHWEST OF DES MOINES INTO THE SOUTHWEST CORNER OF IOWA. THIS LINE OF THUNDERSTORMS IS EXPECTED TO ENTER THE DES MOINES METRO AREA BETWEEN 530 PM AND 545 PM. VERY HEAVY RAIN...STRONG WINDS...LARGE HAIL AND FREQUENT LIGHTNING WILL ACCOMPANY THESE STORMS. THIS IS A VERY DANGEROUS SITUATION...A TORNADO WATCH REMAINS IN EFFECT FOR THE DES MOINES METRO AREA UNTIL 10 PM TONdIGHT. STAY TUNED TO NOAA WEATHER RADIO...AND LOCAL MEDIA SOURCES FOR WARNINGS AS THEY ARE ISSUED. LEWIS
Special weather statement, Jun 13, 5:47 PM CDT, 1 hour 2 minutes before
IAZALL-132340- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 547 PM CDT SUN JUN 13 1993 ...A TORNADO WATCH IS IN EFFECT FOR SOUTH CENTRAL AND SOUTHWEST IOWA UNTIL 10 PM CDT... AT 530 PM CDT...A 25 MILE WIDE CLUSTER OF INTENSE THUNDERSTORMS WITH EXTREMELY HEAVY RAIN WAS LOCATED IN SOUTHWEST IOWA...FROM 35 MILES SOUTHEAST OF COUNCIL BLUFFS NEAR RED OAK...TO 35 MILES SOUTHWEST OF DES MOINES NEAR GREENFIELD. OTHER INTENSE STORMS WERE LOCATED IN A 20 MILE WIDE BAND BETWEEN CARROLL AND PERRY...OR FROM 25 TO 65 MILES NORTHWEST OF DES MOINES. THESE STORMS WERE PRODUCING TORRENTIAL RAIN...GUSTY WINDS...FREQUENT LIGHTNING AND PEA TO MARBLE SIZE HAIL. THE EXTREME RAINFALL WAS CAUSING URBAN FLOODING IN SOME LOCATIONS. IN ADAMS COUNTY THE RAIN HAS ALREADY WASHED OUT TWO BRIDGES ON COUNTY ROADS. THE STORMS WERE PART OF AN AREA OF SHOWERS AND STORMS OCCURRING OVER THE WEST HALF OF IOWA...WEST OF A LINE FROM 30 MILES NORTHEAST OF MASON CITY...TO 50 MILES NORTHEAST OF DES MOINES NEAR MARSHALLTOWN...TO NEAR LAMONI. THE AREA OF STORMS AND SHOWERS WAS MOVING SOUTHEAST AT AROUND 10 MILES AN HOUR...WHILE THE INDIVIDUAL STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. JAK/WPM
Special weather statement, Jun 13, 5:47 PM CDT, 1 hour 2 minutes before
IAZALL-132340- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 547 PM CDT SUN JUN 13 1993 ...A TORNADO WATCH IS IN EFFECT FOR SOUTH CENTRAL AND SOUTHWEST IOWA UNTIL 10 PM CDT... AT 530 PM CDT...A 25 MILE WIDE CLUSTER OF INTENSE THUNDERSTORMS WITH EXTREMELY HEAVY RAIN WAS LOCATED IN SOUTHWEST IOWA...FROM 35 MILES SOUTHEAST OF COUNCIL BLUFFS NEAR RED OAK...TO 35 MILES SOUTHWEST OF DES MOINES NEAR GREENFIELD. OTHER INTENSE STORMS WERE LOCATED IN A 20 MILE WIDE BAND BETWEEN CARROLL AND PERRY...OR FROM 25 TO 65 MILES NORTHWEST OF DES MOINES. THESE STORMS WERE PRODUCING TORRENTIAL RAIN...GUSTY WINDS...FREQUENT LIGHTNING AND PEA TO MARBLE SIZE HAIL. THE EXTREME RAINFALL WAS CAUSING URBAN FLOODING IN SOME LOCATIONS. IN ADAMS COUNTY THE RAIN HAS ALREADY WASHED OUT TWO BRIDGES ON COUNTY ROADS. THE STORMS WERE PART OF AN AREA OF SHOWERS AND STORMS OCCURRING OVER THE WEST HALF OF IOWA...WEST OF A LINE FROM 30 MILES NORTHEAST OF MASON CITY...TO 50 MILES NORTHEAST OF DES MOINES NEAR MARSHALLTOWN...TO NEAR LAMONI. THE AREA OF STORMS AND SHOWERS WAS MOVING SOUTHEAST AT AROUND 10 MILES AN HOUR...WHILE THE INDIVIDUAL STORMS WERE MOVING NORTHEAST AT 30 MILES AN HOUR. JAK/WPM
Special weather statement, Jun 13, 6:43 PM CDT, 6 minutes before
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</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
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</html>The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 10:24 PM CDT | Flash Flood Warning | DMX | Hamilton, Webster | 81 min |
| Jun 13, 3:51 PM CDT | Severe Thunderstorm Warning | DMX | Cass | 54 min |
| Jun 13, 4:03 PM CDT | Tornado Warning | DMX | Cass | 27 min |
| Jun 13, 4:15 PM CDT | Severe Thunderstorm Warning | DMX | Adams | 45 min |
| Jun 13, 4:56 PM CDT | Severe Thunderstorm Warning | DMX | Adair, Union | 49 min |
| Jun 13, 5:13 PM CDT | Severe Thunderstorm Warning | DMX | Greene | 32 min |
| Jun 13, 5:40 PM CDT | Flash Flood Warning | DMX | Adams | 2 hr |
| Jun 13, 6:18 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold, Union | 27 min |
| Jun 13, 6:25 PM CDT | Tornado Warning | DMX | Warren | 35 min |
| Jun 13, 6:52 PM CDT | Severe Thunderstorm Warning | DMX | Decatur | 53 min |
| Jun 13, 6:52 PM CDT | Severe Thunderstorm Warning | DMX | Ringgold | 37 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1993Every severe thunderstorm 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.