noaa’s national weather service 2010 spring flood outlook #2 march 5, 2010 by: darrin hansing ilx...
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NOAA’s National Weather NOAA’s National Weather ServiceService
2010 Spring Flood Outlook 2010 Spring Flood Outlook #2#2
March 5, 2010March 5, 2010
By: Darrin HansingBy: Darrin HansingILX Service HydrologistILX Service Hydrologist
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
Winter PrecipitationWinter Precipitation
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
Soil ConditionsSoil Conditions
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010
Soil Depth 0” - 12” Soil Depth 0” - 72”
Soil moisture 20 to 30% above normal
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
River ConditionsRiver Conditions
Illinois Streamflow ConditionsIllinois Streamflow Conditions● ● The colors represent current streamflow percentiles The colors represent current streamflow percentiles compared to historical daily values.compared to historical daily values.
● ● Only gages with at least 30 years of records are used.Only gages with at least 30 years of records are used.
● ● Overall above normal streamflows in central sections of Overall above normal streamflows in central sections of Illinois with normal to below normalIllinois with normal to below normal conditions across the remainder of conditions across the remainder of the state.the state.
● ● Currently no flooding occurring Currently no flooding occurring across Illinois.across Illinois.
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
Snow pack and SWESnow pack and SWE
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010
Snow Water EquivalentSnow Water Equivalent
Snow DepthSnow Depth
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
Snow pack and SWESnow pack and SWE
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010
Snow Water EquivalentSnow Water EquivalentSnow DepthSnow Depth
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
Flood Outlook SummaryFlood Outlook Summary
Below normal probability for Below normal probability for reaching flood stagereaching flood stage
Near normal probability for Near normal probability for reaching flood stagereaching flood stage
> 20% above normal probability for > 20% above normal probability for reaching flood stagereaching flood stage
6% 20% above normal probability 6% 20% above normal probability for reaching flood stagefor reaching flood stage
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
Flood Outlook ComparisonsFlood Outlook Comparisons
Feb 19Feb 19thth OutlookOutlookBelow normalBelow normal
Near normalNear normal
> 20% above > 20% above normalnormal
6% to 20% above 6% to 20% above normalnormal
Mar 5Mar 5thth OutlookOutlook
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
Flood Outlook Summary - What can we expect?Flood Outlook Summary - What can we expect?
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
Flood Outlook Summary - What can we expect?Flood Outlook Summary - What can we expect?
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010
March 5March 5thth issuance issuance February 19February 19thth issuance issuance
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
OutlooksOutlooks
6 – 10 Day Outlooks6 – 10 Day Outlooks
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
OutlooksOutlooks
30 Day Outlooks30 Day Outlooks
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010
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N a t i o n a l W e a t h e r S e r v i c eN a t i o n a l W e a t h e r S e r v i c eL i n c o l n , I LL i n c o l n , I L
OutlooksOutlooks
30 – 90 Day Outlooks30 – 90 Day Outlooks
Spring Flood Outlook #2 – Issued March 5, 2010Spring Flood Outlook #2 – Issued March 5, 2010